Pattern00046.c

/*

0
0 1
0 2 4
0 3 6 9
0 4 8 12 16

*/

#include <stdio.h>
int main()
{
    int i, j, k;
    for (i = 1; i <= 5; i++)
    {
        k = 0;
        for (j = 1; j <= 5; j++)
        {
            if (j <= i)
            {
                printf("%d ", k);
                k = k + i - 1;
            }
            else
                printf(" ");
        }
        printf("\n");
    }
    return 0;
}