为什么#3和#4错了啊

jmfovo @ 2023-04-24 21:50:54

#include<iostream>
#include<cstring>
using namespace std;
char a[51];
int main() {
    int n;
    cin >> n >> a;
    int b = strlen(a);
    for (int i = 0;i<b; i++) {
        a[i] += n;
        if (a[i] > 122)
            a[i] = a[i] % 122 + 96;
    }
    cout << a;
}

by liuzikun___ @ 2023-04-24 22:14:17

你学过string类型字符串吗？

可以参考一下我的代码

~~~#include <iostream>
#include <cstring>
using namespace std;

string s;
int n;

int main()
{
    int n;
    cin >> n >> s;
    int size = s.size();
    for(int i = 0; i <= size; i++)
    {
        if(s[i] + n > 'z')
        {
            s[i] += n - 26; 
        }
        else
        {
            s[i] += n;
        }
    }
    cout << s << endl;
}
~~~