c program to print pascal triangle:

‪#‎include‬ <stdio.h>

long factorial(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 ",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;
}