算术入门之加减乘除

 1 #include<stdio.h>
 2 
 3 int main(void)
 4 {
 5     int a = 0;
 6     int b = 0;
 7 
 8     scanf_s("%d %d", &a, &b);
 9 
10     printf("%d + %d = %d\n", a, b, a + b);
11     printf("%d - %d = %d\n", a, b, a - b);
12     printf("%d * %d = %d\n", a, b, a * b);
13 
14     if (a % b == 0)
15     {
16         printf("%d / %d = %d", a, b, a / b);
17     }
18     else
19     {
20         printf("%d / %d = %.2f", a, b, a * 1.0 / b);
21     }
22 
23     return 0;
24 }