简单计算器

#include<stdio.h>
int main()
{
int a,b;
char d;
scanf("%d %d %c",&a,&b,&d);
switch(d)
{
    case'+': printf("%d",a+b); break;
    case'-': printf("%d",a-b); break;
    case'*': printf("%d",a*b); break;
    case'/':
        if(b==0)
        {
            printf("Divided by zero!");break;
        }
        else
        {
              printf("%d",a/b); break;
        }
    default: printf("Invalid operator!");
}
return 0;
    }