1 WA 求助

Futaba_Shinaraku @ 2022-05-15 13:55:27

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int a,b,ans;char c;
    cin>>a>>b>>c;
    if(c==43)ans=a+b;
    else if(c==45)ans=a-b;
    else if(c==34)ans=a*b;
    else if(c==47)
    {
        if(b!=0)ans=a/b;
        else
        {
            printf("Divided by zero!");
            return 0;
        }
    }
    if(c!=43&&c!=45&&c!=34&&c!=47)
    {
        printf("Invalid operator!");
        return 0;
    }
    printf("%d",ans);
    return 0;
}

by _Haoomff_ @ 2022-05-15 13:58:15

@Reproduter 乘的ASCII码是42，不是35

by Futaba_Shinaraku @ 2022-05-15 13:59:16

@Haoomff Thx_

(没背ascii 网图事糊的（悲

by Futaba_Shinaraku @ 2022-05-15 14:00:16

已AC

by HarunluoON @ 2022-05-15 14:17:40

其实可以直接这样子'*'使用的 . . .

背ASCII表不是非常重要

by 123uuu @ 2022-10-22 17:36:55

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

by hang2023 @ 2023-04-22 18:58:37

ASCII 码错误。

您不需要进行背 ASCII 码，直接使用字符即可。 将 ASCII 码替换成 '+','-','*','/' 即可。