标签:std get getc print 输入 result 网上 srand null
在四则运算器基本功能上添加了判断正误的功能。
引用自网上的简单四则运算器代码,加以修改。
代码如下:
1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <time.h>
4 #include <math.h>
5
6 int main()
7 {
8 int i = 0;
9 int n = 0;
10 int x = 0;
11 int type;
12 char flag;
13 int a, b;
14 float result1,result2;
15 printf("请输入要出的题目数量\n");
16 scanf_s("%d", &n);
17 srand(unsigned(time(NULL)));
18 while (x<n)
19 {
20 type = rand() % 4;
21 a = rand() % 100;
22 b = rand() % 100;
23 switch (type)
24 {
25 case 0:
26 printf("%d + %d = ?\n", a, b);
27 result1 = a + b;
28 break;
29 case 1:
30 printf("%d - %d = ?\n", a, b);
31 result1 = a -b;
32 break;
33 case 2:
34 printf("%d * %d = ?\n", a, b);
35 result1 = a * b;
36 break;
37 case 3:
38 printf("%d / %d = ?\n", a, b);
39 result1 = (float)a / b;
40 break;
41 }
42 printf_s("请输入答案:");
43 scanf_s("%f",&result2);
44 if (fabs(result1 - result2)<=1e-6)
45 {
46 printf_s("计算正确\n");
47 }
48 else
49 {
50 printf_s("计算错误\n");
51 }
52
53
54 i++;
55 while (i >= n)
56 {
57
58 printf("谢谢使用!\n");
59 fflush(stdin);
60 getchar();
61 return 0;
62 }
63 }
64
标签:std get getc print 输入 result 网上 srand null
原文地址:http://www.cnblogs.com/WQY0903/p/7560411.html