print 2D numbers diagonal array.cpp

#include <iostream>

using namespace std;

int main() {
    int n;
    cin >> n;
    int fields[50][50] = {}; // set to zero
    for (int i = 0; i < n; i++) {
        int v = i+1;
        fields[0][i] = v;
        fields[n-1][i] = v;
        fields[i][0] = 1;
        fields[i][n-1] = n;
        fields[i][i] = v;
        fields[n-1-i][i] = v;
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            if (fields[i][j]) cout << fields[i][j] << ' ';
            else cout << "  ";
        }
        cout << endl;
    }
}