Code # 18:C Program To Find Factorial Of a Number Using Function

#include <stdio.h>

long factorial(int);

int main()
{
  int number;
  long fact = 1;

  printf("Enter a number to calculate it's factorial\n");
  scanf("%d", &number);

  printf("%d! = %ld\n", number, factorial(number));

  return 0;
}

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

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

  return result;
}