DiagonalaParalelaDiagPrinc

#include <iostream>
using namespace std;
int n, i, j, m[51][51];
int main()
{
    cout << "n= "; cin >> n;
    cout << "introdu matricea, "<<n<<" linii cu cate "<<n<<" cu cate numere pe linie "  << endl;
    for (i=0; i<n; ++i)
    {
        for (j=0; j<n; ++j)
            cin >> m[i][j];
    }
    cin >> i >> j;
    cout << "paralela diagonalei principale: ";
    while (i<n && j<n)
    {
        cout << m[i++][j++] << " ";
    }
    return 0;
}