Pascal Triangle

/*
Write a program in C for pascal triangle
*/
 
#include<stdio.h>

long factorial(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 ",factorial(i)/(factorial(c)*factorial(i-c)));

printf("\n");
}

return 0;
}

long factorial(int n)
{
int c;
long result = 1;

for( c = 1 ; c <= n ; c++ )
result = result*c;

return ( result );
}