Subiectul 3 -> Prb 2

#include    <iostream>

using namespace std;

int main()
{
    int mat[101][101];
    unsigned int n;
    cin >> n;

    for(int i = 0; i < n; i++)
        for(int j = 0; j < n; j++)
            cin >> mat[i][j];

// for prima coloana -> 1 2 3 4 5
// for ultima linie (dar fara prima cifra) -> 6 7 8 9
// for ultima coloana (dar fara ultima cifra) -> 0 2 4 6
// for prima linie (dar fara primu + ultimu elem) -> 8 1 3

    for(int i = 0; i < n; i++) // prima coloana
        cout << mat[i][0] << " ";

    for(int j = 1; j < n; j++) // ultima linie
        cout << mat[n - 1][j] << " ";

    for(int i = n - 2; i >= 0; i--) // ultima coloana
        cout << mat[i][n - 1] << " ";

    for(int j = n - 2; j >= 1; j--) // prima linie
        cout << mat[0][j] << " ";

    return 0;
}