实现两个数据的加减乘除
#include <stdio.h>
void main() {
int a, b;
char c;
scanf("%d %c%d", &a, &c, &b);
switch (c) {
case '+': printf("%d\n", a + b); break;
case '-': printf("%d\n", a - b); break;
case '*': printf("%d\n", a * b); break;
case '/':
if (b != 0) {
printf("%d\n", a / b);
break;
}
case '%':
if (b != 0) {
printf("%d\n", a % b);
break;
}
default :
printf("ERROR\n");
break;
}
}