//开发者:邵义豪
//开发时间:2021.1.23
//版本:1.0
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main()
{
int a, b, result, count = 0;
time_t start, end;
printf("您好!我是开发者小邵 syh。\n");
printf("欢迎使用本产品!祝您使用愉快!\n\n");
printf("您想要进行什么运算?(请输入算术符号)\n");
char sign, ch;
scanf("%c", &sign);
srand((int)time(NULL));
switch (sign)
{
case '+':
label1: a = (int)rand() % 100;
b = (int)rand() % 100;
printf("%d + %d = ", a, b);
start = time(NULL);
scanf("%d", &result);
end = time(NULL);
getchar();//消化回车
if (result == a + b)
{
count ++;
printf("%d + %d = %d\n", a, b, result);
printf("祝贺你!回答正确!\n");
printf("用时:%.1f s\n", difftime(end, start));
}
else
{
printf("%d + %d = %d\n", a, b, a+b);
printf("对不起,回答错误!\n");
}
printf("\n继续吗?(Y or N)");
putchar(10);
ch = getchar();
putchar(10);
if (ch == 'Y')
goto label1;
else
break;
case '-':
label2: a = (int)rand() % 100;
b = (int)rand() % 100;
printf("%d - %d = ", a, b);
start = time(NULL);
scanf("%d", &result);
end = time(NULL);
getchar();
if (result == a - b)
{
count ++;
printf("%d - %d = %d\n", a, b, result);
printf("祝贺你!回答正确!\n");
printf("用时:%.1f s\n", difftime(end, start));
}
else
{
printf("%d - %d = %d\n", a, b, a-b);
printf("对不起,回答错误!\n");
}
printf("continue?(Y or N)");
putchar(10);
ch = getchar();
if (ch == 'Y')
goto label2;
else
break;
case '*':
label3: a = (int)rand() % 100;
b = (int)rand() % 100;
printf("%d * %d = ", a, b);
start = time(NULL);
scanf("%d", &result);
end = time(NULL);
getchar();
if (result == a * b)
{
count ++;
printf("%d * %d = %d\n", a, b, result);
printf("祝贺你!回答正确!\n");
printf("用时:%.1f s\n", difftime(end, start));
}
else
{
printf("%d * %d = %d\n", a, b, a*b);
printf("对不起,回答错误!\n");
}
printf("continue?(Y or N)");
putchar(10);
ch = getchar();
if (ch == 'Y')
goto label3;
else
break;
default:
case '/':
label4: do{
a = (int)rand() % 100;
b = (int)rand() % 100;
}while(a % b != 0);
printf("%d / %d = ", a, b);
start = time(NULL);
scanf("%d", &result);
end = time(NULL);
getchar();
if (result == a / b)
{
count ++;
printf("%d / %d = %d\n", a, b, result);
printf("祝贺你!回答正确!\n");
printf("用时:%.1f s\n", difftime(end, start));
}
else
{
printf("%d / %d = %d\n", a, b, a/b);
printf("对不起,回答错误!\n");
}
printf("continue?(Y or N)");
putchar(10);
ch = getchar();
if (ch == 'Y')
goto label4;
else
break;
}
printf("您一共答对了%d道题。\n\n", count);
printf("感谢您使用本产品!\n祝学习进步!\n");
return 0;
}
小项目(一):整数四则运算练习
猜你喜欢
转载自blog.csdn.net/Shao_yihao/article/details/113059439
今日推荐
周排行