晚上一起吃wa

JulieWei @ 2024-04-22 09:50:34

#include<bits/stdc++.h>
using namespace std;
int a,ans;
string s,b;
int main(){
    cin>>a;
    cin>>s;
    for(int i=0;i<=s.size();i++){
        ans=s[i]+a;
        if(ans==122) ans-=25;
        b[i]=ans;
        cout<<b[i];
    }
}

by llamn @ 2024-04-22 11:19:23

@JulieWei
i<=s.size() 改为 i < s.size()

by JulieWei @ 2024-04-22 11:42:11

@20100916cyy_ 还是有2个wa，一个re， 但感谢！

by Ray1029 @ 2024-04-22 20:54:38

@JulieWei 可以改一改为

#include<bits/stdc++.h>
using namespace std;

int main() {
    int a;
    char s[60];
    cin >> a ;
    cin >> s;
    for(int i = 0 ; s[i] != '\0' ; i++){
        if (s[i] + a <= 'z'){
            s[i] = s[i] + a;
        }
        else s[i] = s[i] + a - 26;;

    }
    cout << s;
    return 0;
}

这是AC的，可以试着理解一下

by malinhao45 @ 2024-04-25 21:03:12

#include<bits/stdc++.h>
using namespace std;
int a,ans;
string s,b;
int main(){
    cin>>a;
    cin>>s;
    for(int i=0;i<s.size();i++){
        ans=s[i]+a;
       if(ans>122){
           ans%=122;
           ans+=96;
       }
        b[i]=ans;
        cout<<b[i];
    }
}

by malinhao45 @ 2024-04-25 21:03:59

AC

by malinhao45 @ 2024-04-25 21:04:39

记得关o2