40分，输出结果为什么是这样的？

aouyou @ 2024-07-20 17:21:11

#include <iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    char a[51];
    cin >> a;
    char b[51];
    for (int i = 0; i < 51; i++)
    {
        if (!a[i])
            break;
        else
        {
            if ((a[i] + n) <= 122)
                b[i] = a[i] + n;
            else b[i] = a[i] + n - 26;
        }

    }
    cout << b << endl;
    return 0;
}

by Clare613 @ 2024-07-20 17:35:28

你要在a.size()的范围内！

by Clare613 @ 2024-07-20 17:35:50

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    cin >> n;
    string a,b;
    cin >> a;
    for (int i = 0; i < a.size(); i++)
    {
        if ((a[i] + n) <= 122) b += char(int(a[i]) + n);
        else b += char(int(a[i]) + n - 26);
    }
    cout << b << endl;
    return 0;
}

by Clare613 @ 2024-07-20 17:36:01

求关注