Example: Matrix Pattern in C++ language using For loop

C
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Java
Python
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// Matrix Pattern in C++ language using For loop
#include <iostream>
using namespace std;

int main() {
    int x, i, j, k, d = 1, m;
    // x - denotes the number of rows

    cout << "-----Enter the total number of rows-----\n";
    cin >> x;

    int mat[x][x];
 
    for ( i = 0; i < x; i++) {
        j = i;
        k = 0;
        for ( j = i; j >= 0; j--) {
            mat[k][j] = d;
            d++;
            k++;
        }
    }

    for ( k = 1; k < x; k++) {
        i = m = k;
        for ( j = x-1; j >= m; j--) {
            mat[i][j] = d;
            d++;
            i++;
        }
    }

    cout << "\n-----The matrix pattern-----\n\n";
    for ( i = 0; i < x; i++) {
        for(j = 0; j < x; j++) {
            cout << mat[i][j] << " ";
        }
        cout << "\n";
    }
    return 0;
}