Example: C Program to Print Matrix Pattern using For loop

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// C Program to Print Matrix Pattern using For loop
#include <stdio.h>

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

    printf("-----Enter the total number of rows-----\n");
    scanf("%d", &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++;
        }
    }

    for ( i = 0; i < x; i++) {
        for(j = 0; j < x; j++) {
            printf("%d ", mat[i][j]);
        }
        printf("\n");
    }
    return 0;
}