/*
 *      comb
 *
 *      A very slow way to compute the values of Pascal's triangle
 *      Usage: comb <row>
 *        comb 4
 *          1    4    6    4    1
 */
#include <stdio.h>

int 
C(int i, int j)
{
    if (0 == j)
        return 1;
    if (i == j)
        return 1;
    if (i < 0)
        return 0;
    if (j < 0)
        return 0;
    return C(i-1, j-1) + C(i-1, j);
}

int 
main (int argc, char **argv)
{
    int row = 0;
    int j = 0;

    if (argc != 2)
    {
        printf("Usage: %s row\n", argv[0]);
        exit(1);
    }
 
    row = atoi(argv[1]);

    if (row < 0)
    {
        printf("Usage: enter positive integer %d\n", row);
        exit(1);
    }

    for (j = 0; j <= row; j++)
    {
        /* printf("\tC(%d, %d) = %d", row, j, C(row, j)); */
        printf("\t%d", C(row, j));
    }
    printf("\n");
}