From b6520884e359652bfbbae9ce5a20f3f68e7a6847 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=88=98=E5=8D=8E?= <liuhua22@huawei.com>
Date: Mon, 12 Jul 2021 07:12:50 +0000
Subject: [PATCH] =?UTF-8?q?CI=E6=B5=8B=E8=AF=95=E5=8D=95=EF=BC=8C=E8=AF=B7?=
 =?UTF-8?q?=E5=8B=BF=E5=90=88=E5=85=A5?=
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---
 test0712.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 test0712.c

diff --git a/test0712.c b/test0712.c
new file mode 100644
index 0000000..8522311
--- /dev/null
+++ b/test0712.c
@@ -0,0 +1,77 @@
+#include<stdio.h>
+ 
+int main()
+{
+    int i,j;
+    for(i=0;i<8;i++)
+    {
+        for(j=0;j<8;j++)
+            if((i+j)%2==0)
+                printf("%c%c",219,219);
+            else printf("  ");
+        printf("\n");
+    }
+    return 0;
+}
+
+#include "graphics.h"
+int main()
+{
+    int x0,y0,y1,x1,driver,mode,i;
+    driver=VGA;mode=VGAHI;
+    initgraph(&driver,&mode,"");
+    setbkcolor(YELLOW);
+    x0=263;y0=263;y1=275;x1=275;
+    for(i=0;i<=18;i++)
+    {
+        setcolor(1);
+        rectangle(x0,y0,x1,y1);
+        x0=x0-5;
+        y0=y0-5;
+        x1=x1+5;
+        y1=y1+5;
+    }
+    settextstyle(DEFAULT_FONT,HORIZ_DIR,2);
+    outtextxy(150,40,"How beautiful it is!");
+    line(130,60,480,60);
+    setcolor(2);
+    circle(269,269,137);
+}
+
+#include <stdio.h>
+#include <math.h>
+ 
+float calculateSD(float data[]);
+ 
+int main()
+{
+    int i;
+    float data[10];
+ 
+    printf("输入10个元素: ");
+    for(i=0; i < 10; ++i)
+        scanf("%f", &data[i]);
+ 
+    printf("\n标准偏差 = %.6f", calculateSD(data));
+ 
+    return 0;
+}
+ 
+float calculateSD(float data[])
+{
+    float sum = 0.0, mean, standardDeviation = 0.0;
+ 
+    int i;
+ 
+    for(i=0; i<10; ++i)
+    {
+        sum += data[i];
+    }
+ 
+    mean = sum/10;
+ 
+    for(i=0; i<10; ++i)
+        standardDeviation += pow(data[i] - mean, 2);
+ 
+    return sqrt(standardDeviation/10);
+}
\ No newline at end of file
-- 
Gitee