##自己测试没有问题，结果才40，求大佬指点指点

chicken37210 @ 2023-08-03 10:07:56

#include<bits/stdc++.h> 

using namespace std;
int n;
char s[60];
int main(){
    cin >> n;
    scanf("%s",s + 1);
    int len = strlen(s + 1);
    for(int i = 1;i <= len;i++){
        s[i] = s[i] + n;
        if(s[i] >= 122){
            int t = s[i] - 122;
        s[i] = 97 + t;
    }
    cout << s[i];
    }
    return 0;
} 

by CcmCyh11140810 @ 2023-08-03 10:19:12

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,i,la,b[200];
    char a[200];
    cin>>n;
    cin>>a;
    la=strlen(a);
    for(i=0;i<la;i++)
    {
        b[i]=a[i];
    }
    for(i=0;i<la;i++)
    {
        b[i]=b[i]+n;
    }
    for(i=0;i<la;i++)
    {
        if(b[i]>122)
        {
            b[i]=b[i]%122+96;
        }
    }
    for(int i=0;i<la;i++)
    {
        a[i]=b[i];
        cout<<a[i];
    }
}

by chicken37210 @ 2023-08-04 09:59:39

@CcmCyh11140810 谢谢了