/*
 * C Program to Display Pascal triangle
 */
#include <stdio.h>

void main()
{
    int array[15][15], i, j, rows, num = 25, k;
    printf("\n enter the number of rows:");
    scanf("%d", &rows);
    for (i = 0; i < rows; i++)
        {
            for (k = num - 2 * i; k >= 0; k--)
                printf(" ");
            for (j = 0; j <= i; j++)
                {
                    if (j == 0 || i == j)
                        {
                            array[i][j] = 1;
                        }
                    else
                        {
                            array[i][j] = array[i - 1][j - 1] + array[i - 1][j];
                        }
                    printf("%4d", array[i][j]);
                }
            printf("\n");
        }
}