diff --git "a/49 \346\235\216\350\210\222\346\261\266/49 \346\235\216\350\210\222\346\261\266.md" "b/49 \346\235\216\350\210\222\346\261\266/49 \346\235\216\350\210\222\346\261\266.md"
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+
+
+
+
+
+
+```java
+public class d1 {  
+    public static void main(String[] args) {  
+        Scanner Sc=new Scanner(System.in);  
+        System.out.println("请输入一个四位数的整数");  
+        int numb=Sc.nextInt();  
+        System.out.println("用户填写的四位数是"+numb);  
+        int ge,shi,bai,qian;  
+        ge=numb%10;  
+        shi=numb/10%10;  
+        bai=numb/100%10;  
+        qian=numb/1000;  
+        System.out.println("个位是"+ge+"十位是"+shi+"百位是"+bai+"千位是"+qian);  
+}
+}
+```
+
+    import java.util.Scanner;
+    
+    public class D2 {
+        public static void main(String[] args) {
+            Scanner Sc=new Scanner(System.in);
+            System.out.println("输入华氏温度");
+            double hs = Sc.nextDouble();
+            System.out.println("华氏度变成摄氏度是"+((hs-32)*5/9));
+    
+            System.out.println("输入摄氏度");
+            double ss = Sc.nextDouble();
+            System.out.println("摄氏度变成华氏度是"+(ss * 9/5 + 32));
+    
+        }
+    }
+
+