diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\344\272\224\344\270\200\346\270\270\346\210\217/\344\272\224\344\270\200\346\270\270\346\210\217.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\344\272\224\344\270\200\346\270\270\346\210\217/\344\272\224\344\270\200\346\270\270\346\210\217.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..c1420ef1070389e3f8aa6e27b95fcd3470c524e1
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\344\272\224\344\270\200\346\270\270\346\210\217/\344\272\224\344\270\200\346\270\270\346\210\217.cs"
@@ -0,0 +1,173 @@
+namespace 游戏作业
+{
+    internal class Program
+    {
+class skill:role
+    {
+        public void print() 
+        {
+            Console.WriteLine("角色名称:{0}",rolename);
+            Console.WriteLine("角色介绍:{0}", roleintroduce);
+            Console.WriteLine("角色id:{0}", roleid);
+            Console.WriteLine("攻击力:{0}", attack);
+            Console.WriteLine("防御力:{0}", def);
+            Console.WriteLine("速度:{0}", speed);
+            Console.WriteLine("技能一:{0}", skill1);
+            Console.WriteLine("技能二:{0}", skill2);
+            Console.WriteLine("技能三:{0}", skill3);
+
+        }
+ class role
+    {
+        //角色名字，角色介绍，角色昵称，攻击力，防御力，速度。
+        public string rolename { get; set; }
+        public string roleintroduce { get; set; }
+        public int roleid { get; set; }
+        public int attack { get; set; }
+        public int def { get; set; }
+        public int speed { get; set; }
+        public string skill1 { get; set; }
+        public string skill2 { get; set; }
+        public string skill3 { get; set; }
+       
+
+
+    }
+
+public class person
+    {
+        //编号（Id）、姓名（Name）、性别（Sex）、身份证号（Cardid）、联系方式（Tel）
+        public int Id { get; set; }
+        public string Name { get; set; }
+        public char Sex { get; set; }
+        public string Cardid { get; set; }  
+        public int Tel { get; set; }
+        public void way1() 
+        {
+            Console.WriteLine("编号:{0}",Id);
+            Console.WriteLine("姓名:{0}",Name);
+            Console.WriteLine("性别:{0}",Sex);
+            Console.WriteLine("省份证号;{0}",Cardid);
+            Console.WriteLine("联系方式:{0}",Tel);
+        }
+internal class Teacher:person
+    {
+        //职称（Title）、工资号（Wageno）
+        public string Title;
+        public string Wageno;
+        public void way3() 
+        {
+            Console.WriteLine("职称:{0}",Title);
+            Console.WriteLine("工资号;{0}",Wageno);
+        }
+ class skill:role
+    {
+        public void print() 
+        {
+            Console.WriteLine("角色名称:{0}",rolename);
+            Console.WriteLine("角色介绍:{0}", roleintroduce);
+            Console.WriteLine("角色id:{0}", roleid);
+            Console.WriteLine("攻击力:{0}", attack);
+            Console.WriteLine("防御力:{0}", def);
+            Console.WriteLine("速度:{0}", speed);
+            Console.WriteLine("技能一:{0}", skill1);
+            Console.WriteLine("技能二:{0}", skill2);
+            Console.WriteLine("技能三:{0}", skill3);
+
+        }
+        static void Main(string[] args)
+        {
+//一、 假设要完成一个学校的校园管理信息系统，在员工管理系统中有不同的人员信息，包括学生信息、教师信息等。
+//学生的字段：编号（Id）、姓名（Name）、性别（Sex）、身份证号（Cardid）、联系方式（Tel）、专业（Major）、年级（Grade）
+//教师的字段：编号（Id）、姓名（Name）,性别 （Sex）、身份证号（Cardid）、联系方式（Tel）、职称（Title）、工资号（Wageno）
+//方法一：
+//为学生信息、教师信息创建两个类，并在两个类中分别定义属性和方法：
+//学生类中定义编号（Id）、姓名（Name）、性别（Sex）、身份证号（Cardid）、联系方式（Tel）、专业（Major）、年级（Grade）7 个属性，并定义一个方法在控制台输出这些属性的值。
+//教师类（Teacher）中定义编号（Id）、姓名（Name）,性别 （Sex）、身份证号（Cardid）、联系方式（Tel）、职称（Title）、工资号（Wageno），并将上述属性输岀到控制台。
+//方法二：
+//将 Student 类和 Teacher 类中共有的 属性抽取出来定义为一个类Person，并让Student和Teacher继承Person
+//每个类都要有一个输出属性的方法。
+//每个类都要有初始化数据的有参构造方法。
+
+
+            Console.WriteLine("===========作业============");
+            Console.WriteLine("-----------学生------------");
+            student student1=new student();
+            student1.Id = 146468;
+            student1.Name = "渣男彪彪";
+            student1.Sex = '男';
+            student1.Cardid = "14348686";
+            student1.Tel = 542144348686;
+            student1.Major = "新媒体";
+            student1.Grade = "幼儿园扛把子";
+            student1.way1();
+            student1.way2();
+            Console.WriteLine("----------教师------------");
+            Teacher Teacher1=new Teacher();
+            Teacher1.Id = 368464;
+            Teacher1.Name = "深情男高";
+            Teacher1.Sex = '男';
+            Teacher1.Cardid = "147258369";
+            Teacher1.Tel = 2845258348686;
+            Teacher1.Title = "渣男宝贝";
+            Teacher1.Wageno = "886646814646849436562";
+            Teacher1.way1();
+            Teacher1.way3();
+            //二、使用Wageno;类来描述游戏中的角色。
+            //见英雄文件夹的图片。
+            //分析1: 角色具有以下信息（简单数据）
+            //字段：角色名字，角色介绍，角色昵称，攻击力，防御力，速度。
+            //方法：每个角色都有三个不同的攻击技能。
+            //分析2：四个英雄的公共数据？公共数据向上抽取，抽象成一个Hero类，然后四个英雄继承这个Hero类，然后编写各自特有的类成员。
+            Console.WriteLine("===========作业二============");
+            skill skillone= new skill();
+            skillone.rolename = "霞";
+            skillone.roleintroduce = "我爱你 洛";
+            skillone.roleid = 1;
+            skillone.attack = 80;
+            skillone.def = 50;
+            skillone.speed = 30;
+            skillone.skill1 = "知名节奏";
+            skillone.skill2 = "海妖杀手";
+            skillone.skill3 = "征服者";
+            skill skilltwe=new skill();
+            skilltwe.rolename = "洛";
+            skilltwe.roleintroduce = "为什么你从来不答应我";
+            skilltwe.roleid = 2;
+            skilltwe.attack = 80;
+            skilltwe.def = 50;
+            skilltwe.speed = 30;
+            skilltwe.skill1 = "守护";
+            skilltwe.skill2 = "果实";
+            skilltwe.skill3 = "高原血统";
+            skill skillthere=new skill();
+            skillthere.rolename = "剑魔";
+            skillthere.roleintroduce = "太酷啦";
+            skillthere.roleid = 3;
+            skillthere.attack = 80;
+            skillthere.def = 30;
+            skillthere.speed = 60;
+            skillthere.skill1 = "一打五";
+            skillthere.skill2 = "我是这个世界的梦魇";
+            skillthere.skill3 = "把他澳门拖下水";
+            skill skillsi = new skill();
+            skillsi.rolename = "剑姬";
+            skillsi.roleintroduce = "一秒四破";
+            skillsi.roleid = 4;
+            skillsi.attack = 999;
+            skillsi.def = 999;
+            skillsi.speed =999;
+            skillsi.skill1 = "招架";
+            skillsi.skill2 = "闪现q";
+            skillsi.skill3 = "坐下";
+            skillone.print();
+            Console.WriteLine("-------------------------");
+            skilltwe.print();
+            Console.WriteLine("-------------------------");
+            skillthere.print();
+            Console.WriteLine("-------------------------");
+            skillsi.print();
+            
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\345\233\276\344\271\246\347\256\241\347\220\206\347\263\273\347\273\237/\345\233\276\344\271\246\347\256\241\347\220\206\347\263\273\347\273\237.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\345\233\276\344\271\246\347\256\241\347\220\206\347\263\273\347\273\237/\345\233\276\344\271\246\347\256\241\347\220\206\347\263\273\347\273\237.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..3b0554231f098a8b12321fdfd0c32ccf1a5ab755
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\345\233\276\344\271\246\347\256\241\347\220\206\347\263\273\347\273\237/\345\233\276\344\271\246\347\256\241\347\220\206\347\263\273\347\273\237.cs"
@@ -0,0 +1,262 @@
+namespace 类和属性作业
+{
+    internal class Program
+    {
+     public class Book
+    {
+        //3.定义一个图书类，存放图书的编号、书名、价格、出版社、作者信息；
+        //  对价格进行赋值限制，小于0价格，赋值为0
+        //  在图书类中定义一个方法输出图书信息；
+        //  在主方法实例化对象，赋值并输出
+        private int bookid;
+        private string bookname;
+        private double price;
+        private string publisher;
+        private string autor;
+
+        public int Bookid { get => bookid; set => bookid = value; }
+        public string Bookname { get => bookname; set => bookname = value; }
+        public double Price
+        {
+            get
+            {
+                return price;
+            }
+            set
+            {
+                if (value < 0)
+                {
+                    return;
+                }
+                else
+                {
+                    price = value;
+                }
+            }
+        }
+        public string Publisher { get => publisher; set => publisher = value; }
+        public string Autor { get => autor; set => autor = value; }
+        public void PrintInfo()
+        {
+            Console.WriteLine($"图书编号：{this.bookid}");
+            Console.WriteLine($"书名：{bookname}");
+            Console.WriteLine($"价格：{price}");
+            Console.WriteLine($"出版社：{publisher}");
+            Console.WriteLine($"作者信息：{autor}");
+            Console.WriteLine($"");
+        }
+        public class Student
+    {
+        //2.定义一个学生类，存放学生的学号、姓名、性别、年龄、专业信息；
+        //   对年龄字段进行赋值的安全性设置，如果是非法值（小于0或者大于128岁），该年龄值为0；
+        //   在学生类中定义一个方法输出学生信息。
+        //   在主方法实例化对象，赋值并输出
+        private int id;
+        private string name;
+        public char sex;
+        private int age;
+        private string majorinfo;
+        public int Id
+        {
+            get
+            {
+                return id;
+            }
+            set
+            {
+                id = value;
+            }
+        }
+
+        public string Name
+        {
+            get
+            {
+                return name;
+            }
+            set
+            {
+                name = value;
+            }
+        }
+
+        public int Age
+        {
+            get
+            {
+                return age;
+            }
+            set
+            {
+                if(value < 0 || value > 128)
+                {
+                    age = 0;
+                }
+                else
+                {
+                    age = value;
+                }
+            }
+        }
+
+        public string Majorinfo
+        {
+            get
+            {
+                return majorinfo;   
+            }
+            set
+            {
+                majorinfo= value;
+            }
+        }
+
+        public void PrintInfo()
+        {
+            Console.WriteLine($"学号{this.id}");
+            Console.WriteLine($"姓名{name}");
+            Console.WriteLine($"性别{sex}");
+            Console.WriteLine($"年龄{age}");
+            Console.WriteLine($"专业信息{majorinfo}");
+            Console.WriteLine();
+        }
+          public class User
+    {
+        //1.定义一个用户类，存放用户的账号、用户名和密码属性；
+        //   在用户类中定义一个方法输出当前用户对象的账号、用户名和密码的信息；然后在主方法调用输出；
+        private int account;
+        private string name;
+        private string password;
+        public int Account
+        {
+            get
+            {
+                return account;
+            }
+            set
+            {
+                account = value;
+            }
+        }
+
+        public string Name
+        {
+            get
+            {
+                return name;
+            }
+            set
+            {
+                name = value;
+            }
+        }
+
+        public string Password
+        {
+            get
+            {
+                return password;
+            }
+            set
+            {
+                password = value;
+            }
+        }
+        public void PrintInfo()
+        {
+            Console.WriteLine("账号" + this.account);
+            Console.WriteLine("用户名" + name);
+            Console.WriteLine("密码" + password);
+            Console.WriteLine();
+        }
+    
+
+    
+
+        static void Main(string[] args)
+        {
+            //## 练习
+
+            //1.定义一个用户类，存放用户的账号、用户名和密码属性；
+            //   在用户类中定义一个方法输出当前用户对象的账号、用户名和密码的信息；然后在主方法调用输出；
+
+            Console.WriteLine("user1的数据是：");
+            User user1 = new User();
+            user1.Account = 123456789;
+            user1.Name = "666";
+            user1.Password = "password";
+            user1.PrintInfo();
+
+            Console.WriteLine("user2的数据是：");
+            User user2 = new User();
+            user2.Account =2582582588 ;
+            user2.Name = "999";
+            user2.Password = "niube";
+            user2.PrintInfo();
+
+            //2.定义一个学生类，存放学生的学号、姓名、性别、年龄、专业信息；
+            //   对年龄字段进行赋值的安全性设置，如果是非法值（小于0或者大于128岁），该年龄值为0；
+            //   在学生类中定义一个方法输出学生信息。
+            //   在主方法实例化对象，赋值并输出
+
+            Console.WriteLine("Student1的信息是：");
+            Student student1 = new Student();
+            student1.Id = 1;
+            student1.Name = "渣男";
+            student1.sex = '男';
+            student1.Age = 18;
+            student1.Majorinfo = "zhanangaisi";
+            student1.PrintInfo();
+
+            Console.WriteLine("Student2的信息是：");
+            Student student2 = new Student();
+            student2.Id = 2;
+            student2.Name = "xiaochen";
+            student2.sex = '女';
+            student2.Age = 18;
+            student2.Majorinfo = "aixiaochen";
+            student2.PrintInfo();
+
+            Console.WriteLine("Student3的信息是：");
+            Student student3 = new Student();
+            student3.Id = 3;
+            student3.Name = "henaixiaochen";
+            student3.sex = '女';
+            student3.Age = 18;
+            student3.Majorinfo = "baby";
+            student3.PrintInfo();
+
+            //3.定义一个图书类，存放图书的编号、书名、价格、出版社、作者信息；
+            //  对价格进行赋值限制，小于0价格，赋值为0
+            //  在图书类中定义一个方法输出图书信息；
+            //  在主方法实例化对象，赋值并输出
+
+            Console.WriteLine("图书1的信息是：");
+            Book book1 = new Book();
+            book1.Bookid = 1;
+            book1.Bookname = "sejie";
+            book1.Price = 666.6;
+            book1.Publisher = "haishisejie";
+            book1.Autor = "liangchaowei";
+            book1.PrintInfo();
+
+            Console.WriteLine("图书2的信息是：");
+            Book book2 = new Book();
+            book2.Bookid = 1;
+            book2.Bookname = "woshizhengren";
+            book2.Price = 298;
+            book2.Publisher = "me";
+            book2.Autor = "haose";
+            book2.PrintInfo();
+
+            Console.WriteLine("图书3的信息是：");
+            Book book3 = new Book();
+            book3.Bookid = 1;
+            book3.Bookname = "3333";
+            book3.Price = 333333;
+            book3.Publisher = "zhitousan";
+            book3.Autor = "womenqunaliya";
+            book3.PrintInfo();
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\345\244\232\346\200\201/\345\244\232\346\200\201 (2).md" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\345\244\232\346\200\201/\345\244\232\346\200\201 (2).md"
new file mode 100644
index 0000000000000000000000000000000000000000..ff4fbbf8a6833f44c203c0cfefce20aafc9c8e35
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\345\244\232\346\200\201/\345\244\232\346\200\201 (2).md"	
@@ -0,0 +1,71 @@
+using System.Security.Cryptography.X509Certificates;
+
+namespace 多态作业2
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            //二、创建一个Shape（形状）类，此类包含一个名为color的数据成员，用于存储颜色，
+            //这个类还包含一个名为GetArea()的虚方法（这个方法是用来获取形状面积的）。
+            //基于这个Shape，创建两个子类：Circle（圆形类）和Square（正方形类），
+            //Circle类中包含radius（半径）的数据成员，Square类中包含sideLen（边长）的数据成员，
+            //这两个子类都去重写父类的GetArea()方法，各自去实现计算自己的面积。
+
+            //在主类中添加一个方法，参数类型就是Shape，方法体中，用形参去调用GetArea()方法。
+            //main方法中去测试这个方法。
+            Shape circle = new Circle("黑色",2);
+            Print(circle);
+            Shape square = new Square("白色",6);
+            Print(square);
+        }
+        public static void Print(Shape shape)
+        {
+            shape.GetArea();
+        }
+    }
+    class Shape
+    {
+        public string color;
+
+        public Shape(string color)
+        {
+            this.color = color;
+        }
+
+        public virtual void GetArea()
+        {
+
+        }
+    }
+    class Circle : Shape
+    {
+        
+        public double redius;
+
+        public Circle(string color,double redius) : base(color)
+        {
+            this.redius = redius;
+        }
+
+        public override void GetArea()
+        {
+            Console.WriteLine($"半径为{redius}、颜色为{color}的圆面积为{redius * redius * 3.14}");
+        }
+    }
+    class Square : Shape
+    {
+
+        public double sideLen;
+
+        public Square(string color,double sideLen) : base(color)
+        {
+            this.sideLen = sideLen;
+        }
+
+        public override void GetArea()
+        {
+            Console.WriteLine($"边长为{sideLen}、颜色为{color}的正方形的面积为{sideLen * sideLen}");
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\345\244\232\346\200\201/\345\244\232\346\200\201.md" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\345\244\232\346\200\201/\345\244\232\346\200\201.md"
new file mode 100644
index 0000000000000000000000000000000000000000..9ba2933f6034d7d0cbf0dd80339608afe2519445
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\345\244\232\346\200\201/\345\244\232\346\200\201.md"
@@ -0,0 +1,125 @@
+using System.Security.Cryptography.X509Certificates;
+
+namespace ConsoleApp1
+{
+    internal class Program
+    {
+
+
+
+
+
+        //1、创建Calculate基类，其中包含两个整型的protected成员，用以接收用户输入的两个整数。定义一个DisplayResult()虚方法，计算并输出结果。
+        //2、定义四个类继承自Calculate类，分别重写DisplayResult()方法，实现两个整数的加、减、乘、除运算，并输出结果。
+        //3、根据用户输入的操作符，实例化相应的类，完成运算并输出结果。
+        //4、在主类中添加一个方法，形参为父类对象，根据传递实参的类型，调用方法，实现计算和显示结果。
+
+
+        //二、创建一个Shape（形状）类，此类包含一个名为color的数据成员，用于存储颜色，这个类还包含一个名为GetArea()的虚方法（这个方法是用来获取形状面积的）。
+        //基于这个Shape，创建两个子类：Circle（圆形类）和Square（正方形类），Circle类中包含radius（半径）的数据成员，Square类中包含sideLen（边长）的数据成员，这两个子类都去重写父类的GetArea()方法，各自去实现计算自己的面积。
+
+        //在主类中添加一个方法，参数类型就是Shape，方法体中，用形参去调用GetArea()方法。
+        //main方法中去测试这个方法。
+
+        static void Main(string[] args)
+        {
+            
+            // 一、编写一个控制台应用程序，接受用户输入的两个整数和一个操作符，以实现对两个整数的加、减、乘、除运算，并显示出计算结果。
+            Console.WriteLine("请输入第一个数字");
+            
+            int A= Convert.ToInt32(Console.ReadLine());
+            Console.WriteLine("请输入第二个数字");
+            
+            int B = Convert.ToInt32(Console.ReadLine());
+            Console.WriteLine("请输入一个运算符");
+            string C = Console.ReadLine();
+
+
+            int result;
+            switch (C) 
+            {
+               case"+":
+                    result =A+B;
+                    break;
+                case "-":
+                    result =A-B;
+                    break;
+                case "*":
+                    result = A + B;
+                    break;
+                case "/":
+                    result = A + B;
+                    break;
+            }
+            Calculate(Calculate);
+
+
+        }
+        //在主类中添加一个方法，形参为父类对象，根据传递实参的类型，调用方法，实现计算和显示结果。
+        public static void Calculate(Calculate calculate)
+        {
+            calculate.DisplayResult():
+        }
+    }
+    class Calculate
+    {
+        //其中包含两个整型的protected成员，用以接收用户输入的两个整数
+        protected int A;
+        protected int B;
+        public Calculate(int A, int B)
+        {
+            this.A = A;
+            this.B = B;
+        }
+        //定义一个DisplayResult()虚方法，计算并输出结果
+        public virtual void DisplayResult()
+        {
+            //运算由子类实现
+        }
+
+    }
+    class Add : Calculate
+    {
+        public Add(int A, int B) : base(A, B)
+        {
+
+        }
+        public override void DisplayResult()
+        {
+            Console.WriteLine($"{A}+{B}={A + B}");
+        }
+    }
+    class Sub : Calculate
+    {
+        public Sub(int A, int B) : base(A, B)
+        {
+
+        }
+        public override void DisplayResult()
+        {
+            Console.WriteLine($"{A}-{B}={A - B}");
+        }
+    }
+    class Mul : Calculate
+    {
+        public Mul(int A, int B) : base(A, B)
+        {
+
+        }
+        public override void DisplayResult()
+        {
+            Console.WriteLine($"{A}*{B}={A * B}");
+        }
+    }
+    class Div : Calculate
+    {
+        public Div(int A, int B) : base(A, B)
+        {
+
+        }
+        public override void DisplayResult()
+        {
+            Console.WriteLine($"{A}/{B}={A / B}");
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\346\226\260\345\273\272\346\226\207\346\234\254\346\226\207\346\241\243.txt" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\346\226\260\345\273\272\346\226\207\346\234\254\346\226\207\346\241\243.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..63d0ede1a27149c3b00259edf1fed1fe12d6889f
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\344\270\200\346\254\241\344\275\234\344\270\232/\346\226\260\345\273\272\346\226\207\346\234\254\346\226\207\346\241\243.txt"
@@ -0,0 +1,155 @@
+using System.ComponentModel.Design.Serialization;
+
+namespace one
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            /**
+               //1.求圆的面积
+               //要求用户输入半径的值，打印出以此值为半径的圆的面积
+               Console.WriteLine("请输入圆的半径");
+               double r = double.Parse(Console.ReadLine());
+               //圆周率π定义成常量取3.14。
+               const double π = 3.14;
+               //求圆的面积的公式：πr²。
+               Console.WriteLine(π * r * r);
+               //r由用户输入并存入一个变量中此变量用double比较合适，因为用户可能会输入小数。
+               
+               //2.编写一个程序，请用户输入一个四位整数
+               Console.WriteLine("请输入一个四位整数");
+               int a = int.Parse(Console.ReadLine());
+               //将用户输入的四位数的千位、百位、十位和个位分别显示出来,如5632，则显示“用户输入的千位为5，百位为6，十位为3，个位为2”
+               int 千 = a / 1000;
+               int 百 = a % 1000 / 100;
+               int 十 = a % 100 / 10;
+               int 个 = a % 10;
+               Console.WriteLine("你输入的是" + a + "\n输入的千位为" + 千 + "\n百位为" + 百 + "\n十位为" + 十 + "\n个位为" + 个);
+               //3.用户输入三个数，找出最大的数，打印输出。
+               Console.WriteLine("请输入三个数");
+               int b = int.Parse(Console.ReadLine());
+               int 百2 = b / 100;
+               int 十2 = b % 100 / 10;
+               int 个2 = b % 10;
+               int max = 百2;
+               if (十2 > max)
+               {
+                   max = 十2;
+               }
+               if (个2 > max)
+               {
+                   max = 个2;
+               };
+               Console.WriteLine("你输入的是" + b + "最大值是" + max);
+           
+           //a)	接受用户输入一个数n，求这个数的阶乘；5! = 5 * 4 * 3 * 2 * 1;
+            Console.WriteLine("请输入一个整数");
+            int c = int.Parse(Console.ReadLine());
+            Console.WriteLine("你输入的数是"+c);
+           for(int c1=c;c1>0;c1--)
+            {
+                c *= c1;
+            }
+            Console.WriteLine("这个数的阶乘是"+c);
+           //.接受用户输入的一个数n，求n到1所有数的阶乘和；n! + (n - 1!) + (n - 2)! +……+1!
+            Console.WriteLine("请输入一个整数");
+            int d = int.Parse(Console.ReadLine());
+            for (int d1 = d;d1>0;d1--)
+            {
+                for (int d2 = d1;d2>0;d2--)
+                d *= d1;
+            }
+            
+            Console.WriteLine();
+            //5.根据用户输入的菱形边长，打印菱形；如边长为3，行数为5；
+            for (int f = 1; f <= 3; f++)
+            {
+                for (int f1 = 1; f1 <= 3 - f; f1++)
+                {
+                    Console.Write(" ");
+                }
+                for (int f2 = 1; f2 <= 2 * f - 1; f2++)
+                {
+                    Console.Write("*");
+                }
+                Console.WriteLine();
+            }
+            for (int f = 2; f >= 1; f--)
+            {
+                for (int f1 = 1; f1 <= 3 - f; f1++)
+                {
+                    Console.Write(" ");
+                }
+                for (int f2 = 1; f2 <= 2 * f - 1; f2++)
+                {
+                    Console.Write("*");
+                }
+                Console.WriteLine();
+            }
+
+            
+            //6.用循环打印九九乘法表（用二维数组保存字符串后再打印）
+              for (int d = 1; d < 10; d++)
+            {
+                for (int e = 1; e <= d; e++)
+                {
+                    Console.Write(d + "x" + e + "=" + d * e + "\t");
+                }
+                Console.WriteLine();
+            }
+
+            //7.输入一行字符串，分别统计出其中英文字母、数字、空格的个数。
+            int zm = 0;
+            int sz = 0;
+            int kg = 0;
+            int fh = 0; 
+            Console.WriteLine("输入一行字符串");
+            string sr = Console.ReadLine();
+            char[] sr1 = sr.ToString().ToCharArray();
+            foreach(char s in sr1)
+            {
+                if (s >= 'a' && s <= 'z' || s >= 'A' && s <= 'Z')
+                    zm++;
+                else if (s>='1'&&s<='9')
+                    sz++;
+                else if (s==' ')
+                    kg++;
+                else 
+                    fh++;
+            }
+            Console.WriteLine($"字母{zm},数字{sz}空格{kg}符号{fh}");
+            //8.在 Main 方法中创建一个 double 类型的数组，并在该数组中存入 5 名学生的考试成绩，计算总成绩和平均成绩。（要求使用foreach语句实现该功能
+            double[] scores = { 50,40,60,10,70 };
+            
+            double sum = 0;
+            double avg = 0;
+            foreach (double score in scores)
+            {
+                sum = sum + score;
+            }
+            avg = sum / 5;
+            Console.WriteLine("总成绩为：" + sum);
+            Console.WriteLine("平均成绩为：" + avg);
+
+            //9.定义一个方法，实现一维数组的排序功能，从大到小排序。(不要用Array类的方法)
+    
+                int[] qq = { 50, 40, 60, 10, 70 };
+                for (int i = 0; i < qq.Length; i++)
+                {
+                    for (int j = 0; j < qq.Length - i - 1; j++)
+                    {
+                        if (qq[j] < qq[j + 1])
+                        {
+                            int temp = qq[j];
+                            qq[j] = qq[j + 1];
+                            qq[j + 1] = temp;
+                        }
+                    }
+                }
+                Console.WriteLine("从大到小排序：");
+                foreach (int b in qq)
+                {
+                    Console.Write(b + "\t");
+                }
+                Console.WriteLine();
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\344\270\211\346\254\241\344\275\234\344\270\232/3.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\344\270\211\346\254\241\344\275\234\344\270\232/3.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..d71891a3b3b90bd856301ddc8f24aad98d849afc
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\344\270\211\346\254\241\344\275\234\344\270\232/3.cs"
@@ -0,0 +1,149 @@
+using System.Runtime.CompilerServices;
+
+namespace wyjHomework
+{
+    // 1. 定义一个用户类，存放用户的账号、用户名和密码属性；
+    //在用户类中定义一个方法输出当前用户对象的账号、用户名和密码的信息；然后在主方法调用输出；
+    public class User
+    {
+        public User(int id, string name, string password)
+        {
+            this.Id = id;
+            this.Name = name;
+            this.Password = password;
+        }
+        public int Id { get; set; }
+        public string Name { get; set; }
+        public string Password { get; set; }
+        public void PrintMsg()
+        {
+            Console.WriteLine("账号：" + this.Id);
+            Console.WriteLine("用户名：" + this.Name);
+            Console.WriteLine("密码：" + this.Password);
+        }
+    }
+    class program
+    {
+        static void Main(string[] args)
+        {
+            User user = new User(19, "肖肖", "xiao123123");
+            user.PrintMsg();
+        }
+    }
+    //2.定义一个学生类，存放学生的学号、姓名、性别、年龄、专业信息；
+    //对年龄字段进行赋值的安全性设置，如果是非法值（小于0或者大于128岁），该年龄值为0；
+    //在学生类中定义一个方法输出学生信息。
+    //在主方法实例化对象，赋值并输出
+    public class Student
+    {
+        private int id;
+        private string name;
+        private int age;
+        private string major;
+        public Student(int id, string name, int age, string major)
+        {
+            this.id = id;
+            this.name = name;
+            this.age = age;
+            this.major = major;
+        }
+        public int Id
+        {
+            get { return id; }
+            set { id = value; }
+        }
+        public string Name
+        {
+            get { return name; }
+            set { name = value; }
+        }
+        public int Age
+        {
+            get { return age; }
+            set
+            {
+                if (value > 0 && value < 128)
+                {
+                    age = value;
+                }
+                else
+                {
+                    age = 0;
+                }
+            }
+        }
+        public string Major
+        {
+            get { return major; }
+            set
+            {
+                major = value;
+            }
+        }
+        public void Printmsg()
+        {
+            Console.WriteLine("学号：" + this.id);
+            Console.WriteLine("姓名：" + this.name);
+            Console.WriteLine("年龄：" + this.age);
+            Console.WriteLine("专业：" + this.major);
+        }
+        static void Main(string[] args)
+        {
+            Student x = new Student(19, "肖肖", 3, "软件技术");
+            x.Printmsg();
+        }
+        //3.定义一个图书类，存放图书的编号、书名、价格、出版社、作者信息；
+        //对价格进行赋值限制，小于0价格，赋值为0
+        //在图书类中定义一个方法输出图书信息；
+        //在主方法实例化对象，赋值并输出
+        public class Book
+        {
+            public int id;
+            public string name;
+            public double price;
+            public void SetBook(int id, string name, double price)
+            {
+                this.Id = id;
+                this.Name = name;
+                this.Price = price;
+            }
+            public int Id
+            {
+                get { return id; }
+                set { id = value; }
+            }
+            public string Name
+            {
+                get { return name; }
+                set { name = value; }
+            }
+            public double Price
+            {
+                get { return price; }
+                set
+                {
+                    if (value >= 0)
+                    {
+                        price = value;
+                    }
+                    else
+                    {
+                        price = 0;
+                    }
+                }
+            }
+            public void PrintMsg()
+            {
+                Console.WriteLine("图书编号：" + Id);
+                Console.WriteLine("图书名称：" + Name);
+                Console.WriteLine("图书价格：" + Price);
+            }
+            static void Main(string[] args)
+            {
+                Book book = new Book();
+                book.SetBook(9, "查理九世", 30);
+                book.PrintMsg();
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..cb2fc6f9d616a5887415b0626ad5eaaf767da81c
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232/\347\254\254\344\272\214\346\254\241\344\275\234\344\270\232.cs"
@@ -0,0 +1,78 @@
+namespace ConsoleApp1
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            //1.
+            Console.WriteLine("善学如春起之苗");
+            Console.WriteLine("不见其增,日有所长");
+            Console.WriteLine("假学如磨刀之石");
+            Console.WriteLine("不见其损,年有所亏");
+            Console.WriteLine("加油吧！少年");
+            Console.WriteLine("J\nA\nV\nA\n!\n");
+            //2.
+            Console.WriteLine("true");
+            Console.WriteLine("false");
+            //3.
+            sbyte num1 = -128;
+            byte num2 = 127;
+            Console.WriteLine(num1);
+            Console.WriteLine(num2);
+
+            short num3 = -32768;
+            short num4 = 32767;
+            Console.WriteLine(num3);
+            Console.WriteLine(num4);
+
+            int num5 = -2147483648;
+            int num6 = 2147483647;
+            Console.WriteLine(num5);
+            Console.WriteLine(num6);
+
+            long num7 = -2147483649;
+            long num8 = 2147483648;
+            Console.WriteLine(num7);
+            Console.WriteLine(num8);
+            //4.
+            float num9 = -3.14F;
+            float num10 = 3.14F;
+            Console.WriteLine(num9);
+            Console.WriteLine(num10);
+            double num11 = -3.4;
+            double num12 = 3.4;
+            Console.WriteLine(num11);
+            Console.WriteLine(num12);
+            //5.
+            int a = 10;
+            int b = 20;
+            int temp = a;
+            a = b;
+            b = temp;
+            Console.WriteLine("a的值是"+a);
+            Console.WriteLine("b的值是"+b);
+            //6.
+            int x = 100;
+            int y = 200;
+            int add = x + y;
+            int sub = x - y;
+            int mul = x * y;
+            int div = x / y;
+            Console.WriteLine("x,y的和为："+add);
+            Console.WriteLine("x,y的差为:"+sub);
+            Console.WriteLine("x,y的积为："+mul);
+            Console.WriteLine("x,y的商为:"+div);
+            //7.
+            double x = 100.8;
+            double y = 20.6;
+            double add = x + y;
+            double sub = x - y;
+            double mul = x * y;
+            double div = x / y;
+            Console.WriteLine("x,y的和为:"+add);
+            Console.WriteLine("x,y的差为:"+sub);
+            Console.WriteLine("x,y的积为:"+mul);
+            Console.WriteLine("x,y的商为:"+div);
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/.vs/ConsoleApp3/FileContentIndex/b8ee39e0-ea18-41fd-b53e-720a96eb87dd.vsidx" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/.vs/ConsoleApp3/FileContentIndex/b8ee39e0-ea18-41fd-b53e-720a96eb87dd.vsidx"
new file mode 100644
index 0000000000000000000000000000000000000000..4e875559581212218ac9f812f76d3f24c89c477f
Binary files /dev/null and "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/.vs/ConsoleApp3/FileContentIndex/b8ee39e0-ea18-41fd-b53e-720a96eb87dd.vsidx" differ
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/.vs/ConsoleApp3/FileContentIndex/read.lock" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/.vs/ConsoleApp3/FileContentIndex/read.lock"
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/.vs/ProjectEvaluation/consoleapp3.metadata.v5.2" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/.vs/ProjectEvaluation/consoleapp3.metadata.v5.2"
new file mode 100644
index 0000000000000000000000000000000000000000..4ecec546818d6b2fe4847e94e7d7c7b6a133c746
Binary files /dev/null and "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/.vs/ProjectEvaluation/consoleapp3.metadata.v5.2" differ
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/.vs/ProjectEvaluation/consoleapp3.projects.v5.2" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/.vs/ProjectEvaluation/consoleapp3.projects.v5.2"
new file mode 100644
index 0000000000000000000000000000000000000000..b626d643d318e91ec4147ccb3dd7ff259047905b
Binary files /dev/null and "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/.vs/ProjectEvaluation/consoleapp3.projects.v5.2" differ
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Area.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Area.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..3c0f1b72343d7d8e2ba27fce10f4904dd272f889
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Area.cs"
@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+namespace ConsoleApp3
+{
+    internal class Area
+    {
+        public double Square(double r)
+        {
+            return Math.PI * r * r;
+        }
+
+        public double Square(double length, double width)
+        {
+            return length * width;
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Book.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Book.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..ffcafbe587a5069e94b488ee14f17f575ce2223d
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Book.cs"
@@ -0,0 +1,52 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConsoleApp3
+{
+    internal class Book
+    {
+        private string bookid;
+        private string bookname;
+        private double title;
+        private string description;
+        private string author;
+
+        public string BookId
+        {
+            get { return bookid; }
+            set { bookid = value; }
+        }
+        public string BookName
+        {
+            get { return bookname; }
+            set { bookname = value; }
+        }
+        public double Title
+        {
+            get { return title; }
+            set { title = value; }
+        }
+        public string Description
+        {
+            get { return description; }
+            set { description = value; }
+        }
+        public string Author
+        {
+            get { return author; }
+            set { author = value; }
+        }
+
+        public void PrintBook()
+        {
+            Console.WriteLine("编号：" + bookid);
+            Console.WriteLine("书名：" + bookname);
+            Console.WriteLine("价格：" + title);
+            Console.WriteLine("出版社：" + description);
+            Console.WriteLine("作者信息：" + author);
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Class1.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Class1.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..5fb49469027b30f47d7a211fa508f5e23935c08e
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Class1.cs"
@@ -0,0 +1,12 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConsoleApp3
+{
+    internal class Class1
+    {
+    }
+}
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/ConsoleApp3.csproj" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/ConsoleApp3.csproj"
new file mode 100644
index 0000000000000000000000000000000000000000..40c60dd4c884340c455eab8a0020f7c681a4e76c
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/ConsoleApp3.csproj"
@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/ConsoleApp3.sln" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/ConsoleApp3.sln"
new file mode 100644
index 0000000000000000000000000000000000000000..b696956ff7a53b32cafc751d04bcd6add80d30b6
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/ConsoleApp3.sln"
@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.4.33213.308
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConsoleApp3", "ConsoleApp3.csproj", "{017CA913-6E67-4443-9E7D-8771D17EE48D}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{017CA913-6E67-4443-9E7D-8771D17EE48D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{017CA913-6E67-4443-9E7D-8771D17EE48D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{017CA913-6E67-4443-9E7D-8771D17EE48D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{017CA913-6E67-4443-9E7D-8771D17EE48D}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {A97E538F-779E-4147-8D31-968FD06CEE92}
+	EndGlobalSection
+EndGlobal
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Enemy.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Enemy.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..31df39bea415afe5cf644acab8334d3b06bd5d99
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Enemy.cs"
@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConsoleApp3
+{
+    internal class Enemy
+    {
+        public int hp;
+        public int attack;
+        public int magic;
+
+        public Enemy(int hp, int attack, int magic)
+        {
+            this.hp = hp >= 0 ? hp : 0;
+            this.attack = attack >= 0 ? attack : 0;
+            this.magic = magic >= 0 ? magic : 0;
+        }
+
+        public void Attack()
+        {
+            Console.WriteLine("敌人正在攻击！！！");
+        }
+        public void Escape()
+        {
+            Console.WriteLine("敌人正在逃跑！！！");
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Hero.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Hero.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..e910aa07609faa30ad49b8686c87e05ca6cc3058
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Hero.cs"
@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConsoleApp3
+{
+    internal class Hero
+    {
+        public string name { get; set; }
+        public int attack { get; set; }
+        public int defense { get; set; }
+        public int hp { get; set; }
+        public int magic { get; set; }
+        public void PrintHero()
+        {
+            Console.WriteLine("英雄" + name + "正在攻击！！！");
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Program.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Program.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..09b1b72e49dc3682ed63604a960c2f549c155859
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Program.cs"
@@ -0,0 +1,74 @@
+namespace ConsoleApp3
+{
+    
+//    1. 定义一个计算图形面积的类，类中定义2个计算面积的方法（重载，方法名相同），分别计算圆面积和长方形面积两个方法。
+//提示：计算圆的面积传半径，计算长方形面积传长和宽。
+
+//2.创建一个名为计算工具类 SumUtils，在类中定义4个方法：
+//   	计算两个整数相加、
+//   	两个小数相加、 
+//   	两个字符串相加、
+//	以及从 1 到指定整数的和的方法。
+//在 Main 方法中分别调用定义好的方法。
+
+//提示：根据题目要求，分别定义 3 个带两个参数的方法，以及一个带一个整型参数的方法，
+//           四个方法名相同。
+    
+    
+        internal class Program
+        {
+            static void Main(string[] args)
+            {
+                Area area = new Area();
+                Console.WriteLine("圆的面积是" + area.Square(5));
+                Console.WriteLine("长方形面积是" + area.Square(4, 5));
+
+                SumUtils sumUtils = new SumUtils();
+                Console.WriteLine("两整数之和是" + sumUtils.Add(1, 5));
+                Console.WriteLine("两小数之和是" + sumUtils.Add(2.6, 5.7));
+                Console.WriteLine("两字符串相加是" + sumUtils.Add("Hello" + " ", "C#"));
+                Console.WriteLine("1-11的和是" + sumUtils.Add(11));
+
+                User user = new User();
+                user.Account = "s20230419";
+                user.UserName = "admin";
+                user.Password = "1234567";
+                user.PrintUser();
+                Console.WriteLine("您的身份是:" + user.Login());
+
+                Student student = new Student();
+                student.StuNo = 20230419;
+                student.StuName = "张三";
+                student.Sex = '男';
+                student.Age = 158;
+                student.Major = "软件技术";
+                student.PrintUSer();
+
+                Book book = new Book();
+                book.BookId = "s20230419";
+                book.BookName = "Test";
+                book.Title = 222;
+                book.Description = "Test出版社";
+                book.Author = "张三";
+                book.PrintBook();
+
+                Enemy enemy1 = new Enemy(100,120,150);
+                Enemy enemy2 = new Enemy(-20, -60, -100);
+                Console.WriteLine("敌人1的属性值是：血量={0},攻击力={1},魔法值={2}",enemy1.hp,enemy1.attack,enemy1.magic,enemy1.Attack,enemy1.Escape);
+                Console.WriteLine("敌人1的属性值是：血量={0},攻击力={1},魔法值={2}",enemy2.hp,enemy2.attack,enemy2.magic,enemy2.Attack,enemy2.Escape);
+
+                enemy1.Attack();
+                enemy2.Escape();
+
+
+                Hero hero = new Hero();
+                hero.name = "张三";
+                hero.attack = 100;
+                hero.defense = 100;
+                hero.hp = 100;
+                hero.magic = 100;
+                hero.PrintHero();
+            }
+        }
+    
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Student.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Student.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..7d4681d287ab0c33c0fa9bded8b661519d9e7ad4
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/Student.cs"
@@ -0,0 +1,62 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConsoleApp3
+{
+    internal class Student
+    {
+        private int stuno;
+        private string stuname;
+        private char sex;
+        private int age;
+        private string major;
+
+        public int StuNo
+        {
+            get { return stuno; }
+            set { stuno = value; }
+        }
+        public string StuName
+        {
+            get { return stuname; }
+            set { stuname = value; }
+        }
+        public char Sex
+        {
+            get { return sex; }
+            set { sex = value; }
+        }
+        public int Age
+        {
+            get { return age; }
+            set
+            {
+                if (value < 0 || value > 128)
+                {
+                    value = 0;
+                }
+                else
+                {
+                    age = value;
+                }
+            }
+        }
+        public string Major
+        {
+            get { return major; }
+            set { major = value; }
+        }
+
+        public void PrintUSer()
+        {
+            Console.WriteLine("学号：" + stuno);
+            Console.WriteLine("姓名：" + stuname);
+            Console.WriteLine("性别：" + sex);
+            Console.WriteLine("年龄：" + age);
+            Console.WriteLine("专业信息：" + major);
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/SumUtile.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/SumUtile.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..7b998744e503d44fdae5c8cafed211aea8bd0cdf
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/SumUtile.cs"
@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConsoleApp3
+{
+    internal class SumUtils
+    {
+        public int Add(int a, int b)
+        {
+            return a + b;//return(回来）
+        }
+
+        public double Add(double a, double b)
+        {
+            return a + b;
+        }
+
+        public string Add(string a, string b)
+        {
+            return a + b;
+        }
+
+        public int Add(int n)
+        {
+            int sum = 0;
+            for (int i = 0; i <= n; i++)
+            {
+                sum += i;
+            }
+           return sum;
+        }
+
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/User.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/User.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..83f2b17f24c91d1f74bbe689981c9121e709a5a9
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/User.cs"
@@ -0,0 +1,32 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConsoleApp3
+{
+    internal class User
+    {
+        public string Account;
+        public string UserName;
+        public string Password;
+
+        public void PrintUser()
+        {
+            Console.WriteLine("账号：{0},用户名：{1},密码：{2}", Account, UserName, Password);
+        }
+
+        public string Login()
+        {
+            if (UserName == "admin" && Password == "123456")
+            {
+                return "管理员";
+            }
+            else
+            {
+                return "普通用户";
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/ConsoleApp3.csproj.nuget.dgspec.json" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/ConsoleApp3.csproj.nuget.dgspec.json"
new file mode 100644
index 0000000000000000000000000000000000000000..1c5b534cc15be8aefbddd438c9ea8efd4ccac47f
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/ConsoleApp3.csproj.nuget.dgspec.json"
@@ -0,0 +1,63 @@
+{
+  "format": 1,
+  "restore": {
+    "E:\\C#\\40王生弘作业\\ConsoleApp3\\ConsoleApp3.csproj": {}
+  },
+  "projects": {
+    "E:\\C#\\40王生弘作业\\ConsoleApp3\\ConsoleApp3.csproj": {
+      "version": "1.0.0",
+      "restore": {
+        "projectUniqueName": "E:\\C#\\40王生弘作业\\ConsoleApp3\\ConsoleApp3.csproj",
+        "projectName": "ConsoleApp3",
+        "projectPath": "E:\\C#\\40王生弘作业\\ConsoleApp3\\ConsoleApp3.csproj",
+        "packagesPath": "C:\\Users\\Administrator\\.nuget\\packages\\",
+        "outputPath": "E:\\C#\\40王生弘作业\\ConsoleApp3\\obj\\",
+        "projectStyle": "PackageReference",
+        "configFilePaths": [
+          "C:\\Users\\Administrator\\AppData\\Roaming\\NuGet\\NuGet.Config",
+          "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config"
+        ],
+        "originalTargetFrameworks": [
+          "net6.0"
+        ],
+        "sources": {
+          "C:\\Program Files (x86)\\Microsoft SDKs\\NuGetPackages\\": {},
+          "https://api.nuget.org/v3/index.json": {}
+        },
+        "frameworks": {
+          "net6.0": {
+            "targetAlias": "net6.0",
+            "projectReferences": {}
+          }
+        },
+        "warningProperties": {
+          "warnAsError": [
+            "NU1605"
+          ]
+        }
+      },
+      "frameworks": {
+        "net6.0": {
+          "targetAlias": "net6.0",
+          "imports": [
+            "net461",
+            "net462",
+            "net47",
+            "net471",
+            "net472",
+            "net48",
+            "net481"
+          ],
+          "assetTargetFallback": true,
+          "warn": true,
+          "frameworkReferences": {
+            "Microsoft.NETCore.App": {
+              "privateAssets": "all"
+            }
+          },
+          "runtimeIdentifierGraphPath": "C:\\Program Files\\dotnet\\sdk\\7.0.102\\RuntimeIdentifierGraph.json"
+        }
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/ConsoleApp3.csproj.nuget.g.props" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/ConsoleApp3.csproj.nuget.g.props"
new file mode 100644
index 0000000000000000000000000000000000000000..ac1dfe0953a9f1fe32694308542114620593b129
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/ConsoleApp3.csproj.nuget.g.props"
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <RestoreSuccess Condition=" '$(RestoreSuccess)' == '' ">True</RestoreSuccess>
+    <RestoreTool Condition=" '$(RestoreTool)' == '' ">NuGet</RestoreTool>
+    <ProjectAssetsFile Condition=" '$(ProjectAssetsFile)' == '' ">$(MSBuildThisFileDirectory)project.assets.json</ProjectAssetsFile>
+    <NuGetPackageRoot Condition=" '$(NuGetPackageRoot)' == '' ">$(UserProfile)\.nuget\packages\</NuGetPackageRoot>
+    <NuGetPackageFolders Condition=" '$(NuGetPackageFolders)' == '' ">C:\Users\Administrator\.nuget\packages\</NuGetPackageFolders>
+    <NuGetProjectStyle Condition=" '$(NuGetProjectStyle)' == '' ">PackageReference</NuGetProjectStyle>
+    <NuGetToolVersion Condition=" '$(NuGetToolVersion)' == '' ">6.4.0</NuGetToolVersion>
+  </PropertyGroup>
+  <ItemGroup Condition=" '$(ExcludeRestorePackageImports)' != 'true' ">
+    <SourceRoot Include="C:\Users\Administrator\.nuget\packages\" />
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/ConsoleApp3.csproj.nuget.g.targets" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/ConsoleApp3.csproj.nuget.g.targets"
new file mode 100644
index 0000000000000000000000000000000000000000..35a7576c5a5ead1cdee2137a1838d11d571c5325
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/ConsoleApp3.csproj.nuget.g.targets"
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<Project ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" />
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/project.assets.json" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/project.assets.json"
new file mode 100644
index 0000000000000000000000000000000000000000..0c36a4478d05d4897e5beb523aa41f50db3a29fb
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/project.assets.json"
@@ -0,0 +1,68 @@
+{
+  "version": 3,
+  "targets": {
+    "net6.0": {}
+  },
+  "libraries": {},
+  "projectFileDependencyGroups": {
+    "net6.0": []
+  },
+  "packageFolders": {
+    "C:\\Users\\Administrator\\.nuget\\packages\\": {}
+  },
+  "project": {
+    "version": "1.0.0",
+    "restore": {
+      "projectUniqueName": "E:\\C#\\40王生弘作业\\ConsoleApp3\\ConsoleApp3.csproj",
+      "projectName": "ConsoleApp3",
+      "projectPath": "E:\\C#\\40王生弘作业\\ConsoleApp3\\ConsoleApp3.csproj",
+      "packagesPath": "C:\\Users\\Administrator\\.nuget\\packages\\",
+      "outputPath": "E:\\C#\\40王生弘作业\\ConsoleApp3\\obj\\",
+      "projectStyle": "PackageReference",
+      "configFilePaths": [
+        "C:\\Users\\Administrator\\AppData\\Roaming\\NuGet\\NuGet.Config",
+        "C:\\Program Files (x86)\\NuGet\\Config\\Microsoft.VisualStudio.Offline.config"
+      ],
+      "originalTargetFrameworks": [
+        "net6.0"
+      ],
+      "sources": {
+        "C:\\Program Files (x86)\\Microsoft SDKs\\NuGetPackages\\": {},
+        "https://api.nuget.org/v3/index.json": {}
+      },
+      "frameworks": {
+        "net6.0": {
+          "targetAlias": "net6.0",
+          "projectReferences": {}
+        }
+      },
+      "warningProperties": {
+        "warnAsError": [
+          "NU1605"
+        ]
+      }
+    },
+    "frameworks": {
+      "net6.0": {
+        "targetAlias": "net6.0",
+        "imports": [
+          "net461",
+          "net462",
+          "net47",
+          "net471",
+          "net472",
+          "net48",
+          "net481"
+        ],
+        "assetTargetFallback": true,
+        "warn": true,
+        "frameworkReferences": {
+          "Microsoft.NETCore.App": {
+            "privateAssets": "all"
+          }
+        },
+        "runtimeIdentifierGraphPath": "C:\\Program Files\\dotnet\\sdk\\7.0.102\\RuntimeIdentifierGraph.json"
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/project.nuget.cache" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/project.nuget.cache"
new file mode 100644
index 0000000000000000000000000000000000000000..6e11e24a98d706561c7dd6c7c24dbc28eea7642a
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\254\254\345\233\233\346\254\241\344\275\234\344\270\232/ConsoleApp3/obj/project.nuget.cache"
@@ -0,0 +1,8 @@
+{
+  "version": 2,
+  "dgSpecHash": "hpkHQpFeBJSF0zMyk8AqnGezLpSbds5yyJYR3AvBQJlCyoK9An0SjdsqVHqoNj2FevBONMaT46FhVYwXgfBuLQ==",
+  "success": true,
+  "projectFilePath": "E:\\C#\\40王生弘作业\\ConsoleApp3\\ConsoleApp3.csproj",
+  "expectedPackageFiles": [],
+  "logs": []
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\273\247\346\211\277/\347\273\247\346\211\2771.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\273\247\346\211\277/\347\273\247\346\211\2771.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..f7948e5075a5a66d27f205683318044df29d091b
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\273\247\346\211\277/\347\273\247\346\211\2771.cs"
@@ -0,0 +1,98 @@
+namespace ConsoleApp1
+{
+    internal class Program
+    {
+
+        //        1.	定义一个员工类，作为基类，包含姓名，性别，年龄等属性；包含一个方法代表工作的行为
+
+        //2.	定义一个医生类，继承员工类，重写工作的方法，描述医生的具体工作
+
+        //3.	定义一个程序员类，继承员工类，重写工作方法，描述程序员具体工作
+
+        //4.	定义一个清洁工类，继承员工类，重写工作方法，描述清洁工的具体工作
+
+        //5.	在主方法中为每个类实例化一个对象，用每个对象调用工作方法；
+
+        static void Main(string[] args)//实例化
+        {
+            Cleanr cleanr= new Cleanr("赖志生",'女',3);
+            cleanr.behavior();
+            Doctor driver= new Doctor("钱泰铭",'女',18);
+            driver.behavior();
+            Programmer programmer = new Programmer("木翔",'男',58);
+            programmer.behavior();
+        }
+
+    }
+}
+internal class yg//定义属性
+    {
+        public string Name { get; set; }
+        public char Sex { get; set; }
+        public double Year { get; set; }
+
+        public yg(string name,char sex,double year)//定义一个有参
+        {
+             this.Name=Name;
+             this.Sex = Sex;
+            this.Year = Year;
+        }
+        public yg() //定义一个无参
+        { 
+        }
+        public virtual void behavior()//行为
+        {
+            Console.WriteLine("");
+        }
+    }
+internal class Cleanr:yg
+    {
+        public Cleanr(string Name,char Sex,double Year) //有参
+        {
+            this.Name = Name;
+            this.Sex = Sex;
+            this.Year = Year;
+        }
+        public Cleanr()//无参
+        {
+        }
+        public override void behavior()//行为
+        {
+            base.behavior();
+            Console.WriteLine($"{Name}正在打扫卫生");
+        }
+    }
+internal class Doctor:yg
+    {
+        public Doctor(string Name,char Sex,double Year)
+        {
+            this.Name = Name;
+            this.Sex = Sex;
+            this.Year = Year;
+        }
+        public Doctor() //无参
+        {
+        }
+        public override void behavior()
+        {
+            base.behavior();
+            Console.WriteLine($"{Year}的{Name}{Sex}医生正在给病人看病");
+        }
+    }internal class Programmer:yg
+    {
+        public Programmer(string Name, char Sex, double Year)
+        {
+            this.Name = Name;
+            this.Sex = Sex;
+            this.Year = Year;
+        }
+        public Programmer()
+        {
+
+        }
+        public override void behavior()
+        {
+            base.behavior();
+            Console.WriteLine($"{Year}的{Name}正在秃头");
+        }
+    }
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\273\247\346\211\277/\347\273\247\346\211\2772.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\273\247\346\211\277/\347\273\247\346\211\2772.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..1279aad92ec5a661371b154200726a613a47fd6b
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\347\273\247\346\211\277/\347\273\247\346\211\2772.cs"
@@ -0,0 +1,167 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace 虚方法
+{
+    //1.	动物类：具有动物的共同属性：腿，重量等；共同行为：吃，叫，睡
+    internal class Animal
+    {
+        public string Name { get; set; }//姓名
+        public int Leg { get; set; }//腿
+        public int Weight { get; set; }//重量
+         public Animal(string name, int leg, int weight)
+             {
+                  Name = name;
+                  Leg = leg;
+                  Weight = weight;
+              }
+
+        public Animal()
+        {
+        }
+
+
+        public virtual void Eat()
+        {
+            Console.WriteLine($"{Name}有{Leg}条腿，{Weight}kg,吃吃吃");
+        }
+        public virtual void Cry()
+        {
+            Console.WriteLine($"{Name}有{Leg}条腿，{Weight}kg,叫叫叫");
+        }
+        public virtual void Sleep()
+        {
+            Console.WriteLine($"{Name}有{Leg}条腿，{Weight}kg,睡睡睡");
+        }
+        
+        internal class Bird : Animal
+    {
+        public string Name { get; set; }
+        public Bird()
+        {
+        }
+
+        public Bird(string name, int leg, int weight) : base(name, leg, weight)
+        {
+        }
+
+        public void Fly()
+        {
+            Console.WriteLine($"{Name}是鸟类动物具有飞行能力");
+        }
+     }
+        
+        internal class Cat:Animal
+    {
+        
+
+        public int Beard { get; set; }//胡须
+
+
+        public Cat()
+        {
+        }
+
+        public Cat(string name, int leg, int weight) : base(name, leg, weight)
+        {
+        }
+
+        public void NightVision()
+        {
+            Console.WriteLine("猫科类动物具有夜视能力");
+        }
+    }
+        
+        internal class Tiger : Cat
+    {
+        public Tiger()
+        {
+        }
+
+        public Tiger(string name, int leg, int weight) : base(name, leg, weight)
+        {
+        }
+
+        public override void Eat()
+        {
+            base.Eat();
+            Console.WriteLine("老虎正在吃肉");
+        }
+        public override void Cry()
+        {
+            //base.Cry();
+            Console.WriteLine("老虎正在交配");
+        }
+    }
+        
+        internal class Kitty : Cat
+    {
+       
+
+        public Kitty()
+        {
+        }
+
+        public Kitty(string name, int leg, int weight) : base(name, leg, weight)
+        {
+        }
+
+        public override void Eat()
+        {
+            base.Eat();
+            Console.WriteLine("猫正在吃大饼");
+        }
+        public override void Cry()
+        {
+            //base.Cry();
+            Console.WriteLine("猫在哭 孩子没了");
+        }
+    }
+        internal class Eagle : Bird//老鹰
+    {
+        public Eagle()
+        {
+        }
+
+        public Eagle(string name, int leg, int weight) : base(name, leg, weight)
+        {
+        }
+
+        public override void Eat()
+        {
+            base.Eat();
+            Console.WriteLine("老鹰再吃屎壳郎的孩子");
+        }
+        public override void Cry()
+        { 
+            //base.Cry();
+            Console.WriteLine("老鹰正在哭  屎壳郎把他的孩子推下了巢穴");
+        }
+    }
+        
+        internal class Swallow : Bird
+    {
+        public Swallow()
+        {
+        }
+        public Swallow(string name, int leg, int weight) : base(name, leg, weight)
+        {
+        }
+
+        public override void Eat()
+        {
+            base.Eat();
+            Console.WriteLine("麻雀在吃蚯蚓");
+        }
+        public override void Cry()
+        {
+            //base.Cry();
+            Console.WriteLine("麻雀在喳喳喳");
+        }
+    }
+        
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\351\207\215\350\275\275/\351\207\215\350\275\275.cs" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\351\207\215\350\275\275/\351\207\215\350\275\275.cs"
new file mode 100644
index 0000000000000000000000000000000000000000..6f0f9c700a02134b409e5c685d23b664ba479721
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\351\207\215\350\275\275/\351\207\215\350\275\275.cs"
@@ -0,0 +1,82 @@
+namespace 重载
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            //1.定义一个计算图形面积的类，类中定义2个计算面积的方法（重载，方法名相同），分别计算圆面积和长方形面积两个方法。
+            //提示：计算圆的面积传半径，计算长方形面积传长和宽。
+            Console.WriteLine("1、计算长方形的面积");
+            Console.WriteLine("2、计算圆的面积");
+            int i = Convert.ToInt32(Console.ReadLine());
+            if(i == 1)
+            {
+                Console.WriteLine("请输入长l:");
+                double l = Convert.ToDouble(Console.ReadLine());
+                Console.WriteLine("请输入宽w:");
+                double w = Convert.ToDouble(Console.ReadLine());
+                Count_Area count1 = new Count_Area();
+                Console.WriteLine($"长方形的面积为{count1.Count(l, w)}");
+            }
+            else if(i == 2)
+            {
+                Console.WriteLine("请输入半径r:");
+                double r = Convert.ToDouble(Console.ReadLine());
+                Count_Area count1 = new Count_Area();
+                Console.WriteLine($"圆的面积为{count1.Count(r)}");
+            }
+            else
+            {
+                Console.WriteLine("您输入的有误");
+            }
+
+
+            //2.创建一个名为计算工具类 SumUtils，在类中定义4个方法：
+            //   	计算两个整数相加、
+            //   	两个小数相加、 
+            //   	两个字符串相加、
+            //	以及从 1 到指定整数的和的方法。
+            //在 Main 方法中分别调用定义好的方法。
+
+            //提示：根据题目要求，分别定义 3 个带两个参数的方法，以及一个带一个整型参数的方法，
+
+            //      四个方法名相同。
+            SumUntils int1 = new SumUntils();
+            Console.WriteLine(int1.Sum(1, 2));
+
+            SumUntils double1 = new SumUntils();
+            Console.WriteLine(double1.Sum(1.1,2.2));
+
+            SumUntils str1 = new SumUntils();
+            Console.WriteLine(str1.Sum("Hello","World"));
+        }
+    }
+    public class Count_Area
+    {
+        //1.定义一个计算图形面积的类，类中定义2个计算面积的方法（重载，方法名相同），分别计算圆面积和长方形面积两个方法。
+        //提示：计算圆的面积传半径，计算长方形面积传长和宽。
+        public double Count(double l, double w)
+        {
+            return l * w;
+        }
+        public double Count(double r)
+        {
+            return r * r * 3.14;
+        }
+    }
+    public class SumUntils
+    {
+        public int Sum(int a,int b)
+        {
+            return a + b;
+        }
+        public double Sum(double c,double d)
+        {
+            return c + d;
+        }
+        public string Sum(string e,string f)
+        {
+            return e + f;
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\351\235\231\346\200\201/\346\226\260\345\273\272\346\226\207\346\234\254\346\226\207\346\241\243 (2).txt" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\351\235\231\346\200\201/\346\226\260\345\273\272\346\226\207\346\234\254\346\226\207\346\241\243 (2).txt"
new file mode 100644
index 0000000000000000000000000000000000000000..8c884ac558523ec77ff4d167c9fa6c34c73c0d57
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\351\235\231\346\200\201/\346\226\260\345\273\272\346\226\207\346\234\254\346\226\207\346\241\243 (2).txt"	
@@ -0,0 +1,59 @@
+namespace 静态字段
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            ban ban1 = new ban("666");
+            ban ban2 = new ban("999");
+            ban.teachname = "dapiaoliang";
+            ban1.print();
+            ban2.print();
+            ban.teachname = "xiaoqi";
+            ban1.print();
+            ban2.print();
+            student student1 = new student(2, "momotui", '变态');
+            student1.print1();
+        }
+    }
+    class ban
+    {
+        string stuname;
+
+        public ban(string stuname)
+        {
+            this.stuname = stuname;
+        }
+
+        public static string teachname;
+
+        public string Stuname { get => stuname; set => stuname = value; }
+        public void print()
+        {
+            Console.WriteLine("大家好,我是" + stuname + ",我的老师叫" + teachname);
+        }
+    }
+    class student
+    {
+        int id;
+        string name;
+        char sex;
+
+        public student(int id, string name, char sex)
+        {
+            this.id = id;
+            this.name = name;
+            this.sex = sex;
+        }
+
+        public int Id { get => id; set => id = value; }
+        public string Name { get => name; set => name = value; }
+        public char Sex { get => sex; set => sex = value; }
+        public void print1()
+        {
+            Console.WriteLine("学号为" + id);
+            Console.WriteLine("姓名为" + name);
+            Console.WriteLine("性别为" + sex);
+        }
+    }
+}
\ No newline at end of file
diff --git "a/40\345\217\267\347\216\213\347\224\237\345\274\230/\351\235\231\346\200\201/\346\226\260\345\273\272\346\226\207\346\234\254\346\226\207\346\241\243.txt" "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\351\235\231\346\200\201/\346\226\260\345\273\272\346\226\207\346\234\254\346\226\207\346\241\243.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..f31a2771c906af7a17a62ecd0db372cd269639a7
--- /dev/null
+++ "b/40\345\217\267\347\216\213\347\224\237\345\274\230/\351\235\231\346\200\201/\346\226\260\345\273\272\346\226\207\346\234\254\346\226\207\346\241\243.txt"
@@ -0,0 +1,55 @@
+namespace 静态2
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("请输入字符串");
+            StringUtil.ch = Console.ReadLine();
+            Console.WriteLine(StringUtil.su());
+            Console.WriteLine(ArrayUtil.shuzu());
+        }
+    }
+    class StringUtil
+    {
+        public static string ch;
+        public static bool su()
+        {
+            if (ch == "null")
+            {
+                return true;
+            }
+            else if (ch == " ")
+            {
+                return true;
+            }
+            else if (string.IsNullOrWhiteSpace(ch))
+            {
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+    }
+    class ArrayUtil
+    {
+        public static string[] arr = new string[0];
+        public static bool arrs()
+        {
+            if (arr == null)
+            {
+                return true;
+            }
+            else if (arr.Length == 0)
+            {
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+    }
+}
\ No newline at end of file