请大家看一下，哪里出错了，谢谢

luyanmin @ 2022-05-21 16:21:36

#include<bits/stdc++.h>
using namespace std;
int main(){
    long long a,b; 
    char fu;
    cin>>a>>b>>fu;
    switch(fu){
        case'+': cout<<a+b;break;
        case'-': cout<<a-b;break;
        case'*': cout<<a*b;break;
        case'/':
        if(b!=0) {
            cout<<a/b;
        }                   
        else {
        cout<<"Divided by zero!";break;
        }
                default: cout<<"Invalid operator!";
    }   
    return 0;
} 

by Argon_Cube @ 2022-05-21 16:27:47

@luyanmin 2 3 /

by Lhy2021 @ 2022-05-21 16:31:08

是全错吗

by Const_int_MAXN @ 2022-05-21 16:31:23

@Epsilon_Cube

除号表示整除，结果向 0 取整。

by jimmyfj @ 2022-05-21 16:31:47

@luyanmin 调好了

by jimmyfj @ 2022-05-21 16:34:18

@luyanmin 你那个 cout<<a/b; 后面漏了 break; 不然还会输出Invalid operator!

by Argon_Cube @ 2022-05-21 16:34:34

@Const_int_MAXN 他if里没加break。

by luyanmin @ 2022-05-21 16:37:43

#include<bits/stdc++.h>
using namespace std;
int main(){
    long long a,b; 
    char fu;
    cin>>a>>b>>fu;
    switch(fu){
        case'+': cout<<a+b;break;
        case'-': cout<<a-b;break;
        case'*': cout<<a*b;break;
        case'/':
        if(b!=0) {
            cout<<a/b;break;
        }                   
        else {
        cout<<"Divided by zero!";
        }break;
                default: cout<<"Invalid operator!";
    }   
    return 0;
} 

by jimmyfj @ 2022-05-21 16:38:41

@luyanmin

#include <bits/stdc++.h>
using namespace std;
int main(){
    long long a, b; 
    char c;
    cin >> a >> b >> c;
    switch(c)
    {
        case'+': cout << a + b;break;
        case'-': cout << a - b;break;
        case'*': cout << a * b;break;
        case'/':
        if(b != 0)
        {
            cout << a / b;
            break;
        }                   
        else {cout<<"Divided by zero!";break;}
        default: cout<<"Invalid operator!";
    }   
    return 0;
} 

by luyanmin @ 2022-05-21 16:39:03

过了，谢谢大家

by Const_int_MAXN @ 2022-05-21 16:43:23

@Epsilon_Cube 知道了谢谢