#include <stdio.h>

    int main()
    {
      int c, n, fact = 1;

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

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

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

      return 0;
    }