为什么WA了啊？！

riki1230 @ 2023-03-28 20:10:31

#include <iostream>
using namespace std;
int main(){
    int a,b;
    char c;
    cin>>a>>b>>c;
    if(c=='+'){
        cout<<a+b<<endl;
        return 0;
    }
    if(c=='-'){
        cout<<a-b<<endl;
        return 0;
    }
    if(c=='*'){
        cout<<a*b<<endl;
        return 0;
    }
    if(c=='/'){
        if(b==0){
            cout<<"Divided by zero!"<<endl;
            return 0;
        }
        cout<<a/b<<endl;
    }
    cout<<"Invalid operator!"<<endl;
    return 0;
}

by riki1230 @ 2023-03-28 20:11:23

本地运行还可以
提交就WA了

by 幻想繁星 @ 2023-03-28 20:13:15

@yuanshanlishu hack如下 2 1 /

by tangrunxi @ 2023-03-28 20:14:04

@yuanshanlishu

#include <iostream>
using namespace std;
int main(){
    int a,b;
    char c;
    cin>>a>>b>>c;
    if(c=='+'){
        cout<<a+b<<endl;
        return 0;
    }
    if(c=='-'){
        cout<<a-b<<endl;
        return 0;
    }
    if(c=='*'){
        cout<<a*b<<endl;
        return 0;
    }
    if(c=='/'){
        if(b==0){
            cout<<"Divided by zero!"<<endl;
            return 0;
        }
        cout<<a/b<<endl;
        return 0;//这里加一行
    }
    cout<<"Invalid operator!"<<endl;
    return 0;
}

by InversionShadow @ 2023-03-28 20:14:39

a/b 之后要 return 0

by riki1230 @ 2023-03-28 20:15:53

对对对

by riki1230 @ 2023-03-28 20:17:51

@[tangrunxi](/user/231147) @[yuandingquan1101](/user/672281) @[_1412_kid](/user/649095)  
感谢各位大佬
（膜拜）