C program to print Pascal's triangle

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Code:

#include<stdio.h>

long fact(int);

int main()

{

   int i, n, c;

   printf("Enter the number of rows you wish to see in pascal  triangle\n");

   scanf("%d",&n);

   for ( i = 0 ; i < n ; i++ )

   {

      for ( c = 0 ; c <= ( n - i - 2 ) ; c++ )

         printf(" ");

       for( c = 0 ; c <= i ; c++ )

         printf("%ld ",fact(i)/(fact(c)*fact(i-c)));

      printf("\n");

   }

   return 0;

}

long fact(int n)

{

   int c;

   long result = 1;

   for( c = 1 ; c <= n ; c++ )

         result = result*c;

   return ( result );

}

OR

#include <stdio.h>

void main(){

    int rows, coef = 1, space, i, j;

    printf("Enter number of rows: ");

    scanf("%d",&rows);

    for(i=0; i<rows; i++)

    {

        for(space=1; space <= rows-i; space++)

            printf("  ");

        for(j=0; j <= i; j++)

        {

            if (j==0 || i==0)

                coef = 1;

            else

                coef = coef*(i-j+1)/j;

            printf("%3d", coef);

        }

        printf("\n");

    }

    }

Output:

Enter number of rows: 6                                                                                                          

              1                                                                                                                  

            1  1                                                                                                                 

          1  2  1                                                                                                                

        1  3  3  1                                                                                                               

      1  4  6  4  1                                                                                                              

    1  5 10 10  5  1                                                                                                             

                

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