#include<stdio.h>
void main()
{
    int num1,num2,result;
    char op;
    printf("请输入num1,num2的值：");
    scanf("%d,%d",&num1,&num2);
    printf("请输入运算符，只能在（+、-、%、*、/)中选择：\n");
    scanf("%c",&op);
    switch(op)
    {
    case'+':
        result=num1+num2;
        break;
    case'-':
        result=num1-num2;
        break;
    case'*':
        result=num1*num2;
        break;
    case'%':

        result=num1%num2;
        break;
    case'/':
        if(num2==0)
        {  
             printf("此输入有误！\n");
        }
        else
        {
            result=num1/num2;
            break;
        }
   
    default:
        {
            printf("operator is out of range\n");
            break;
        }
    }

    printf("结果是%d\n",result);
}

        

谢谢指导！