c program to find factorial of a number

#include <stdio.h>
#include <conio.h> 
void main()
{
  int c, n, fact = 1;
  printf("Enter a number to calculate it's factorial\n");
  scanf("%d", &n); 
  for (c = 1; c <= n; c++)

  {
    fact = fact * c; 
  }

  printf("Factorial of %d = %d\n", n, fact);
  getch();
}