#include<stdio.h>
int main()
{
    int value1,value2,result,result1,result2,result3,result4;
    char op;
   
    printf("请输入算式；");
    scanf("%d%c%d",&value1,&op,&value2);
    while(op!='='){
    if(op=='+'){
        result1=value1+value2;
        scanf("%d",result1);
    }
    else if(op=='-'){
        result2=value1-value2;
        scanf("%d",result2);
    }
    else if(op=='*'){
        result3=value1*value2;
        scanf("%d",result3);
    }
    else if (op=='/'){
        result4=value1/value2;
        scanf("%d",result4);
    }
    }
    result=result1+result2+result3+result4;
    scanf("%d",&result);

    printf("result=%d",result);
    return 0;
}




/*我的循环不能正常退出，多谢大牛指点*/

#include<stdio.h>
int main()
{
    double value, result;
    char op;
    printf("请输入算式；");
    scanf("%lf", &value);
    result = value;
    while(scanf(" %c",&op)==1 && op!='=')
    {
        scanf("%lf", &value);
        if(op=='+')
            result += value;
        else if(op=='-')
            result -= value;
        else if(op=='*')
            result *= value;
        else if (op=='/')
            result /= value;
    }
    printf("%lf\n", result);
    return 0;
}

#include<stdio.h>
int main()
{
    int value1,value2,result,result1,result2,result3,result4;
    char op;
    int x=1;
    printf("请输入算式；");
    scanf("%d%c%d",&value1,&op,&value2);
    while(x){
    if(op=='+'){
        result=value1+value2;
        x=0;
        
    }
    else if(op=='-'){
        result=value1-value2;
            x=0;
    }   
    else if(op=='*'){
        result=value1*value2;
            x=0;
    }
    else if (op=='/'){
        result=value1/value2;
            x=0;
    }
    }
    printf("result=%d",result);
    return 0;
}