Untitled

#include <iostream>
using namespace std;

int main()
{
    int n;
    char ch;
    cin >> n >> ch;

    char mas[100][100]{};
    for (int i = 0; i < n; i++)
    {
        for (int j = 0; j < n; j++)
        {
            mas[i][j] = ch;
            cout << mas[i][j];
        }
        cout << endl;
    }
}