#include <iostream> 
using namespace std;
int main()
{
    char a[100][100], b[100][100];
    string c[100];
    string tmp;
    int n, i = 0, j = 0, k = 0, total_len[100], length[100][3];
    cin >> n;
    getline(cin, tmp);
    for (i = 0; i < n; i++)
    {
        getline(cin, c[i]);
        total_len[i] = c[i].size();
    }
    for (i = 0; i < n; i++)
    {
        j = 0;
        while (c[i][j] != ':')
        {
            a[i][k] = c[i][j];
            k = k + 1;
            j++;
        }
        length[i][1] = k - 1;
        a[i][k] = 0;
        k = 0;
        for (j = j + 1; j < total_len[i]; j++)
        {
            b[i][k] = c[i][j];
            k = k + 1;
        }
        length[i][2] = k - 1;
        b[i][k] = 0;
        k = 0;
    }
    for (i = 0; i < n; i++)
    {
        if (length[i][1] >= length[i][2])
            cout << "NO,";
        else
        {
            k = 0;
            for (j = 0; j < length[i][2]; j++)
            {
                if (a[i][k] == b[i][j])
                    k = k + 1;
                if (k > length[i][1])
                    break;
            }
            if (j == length[i][2])
                cout << "NO,";
            else
                cout << "YES,";
        }
    }
    cout << endl;
    return 0;
}

if (k > length[i][1]) break;

去掉这个，结果是否不变

答案:不变

感觉不太对的样子，有没有大佬讲解一下