Write your own versions of the fact.cc and factMain.cc files. These files should include your Chapter6.h from the exercises in the previous section. Use these files to understand how your compiler supports separate compilation

"Chapter6.h"

// For ex6.9
#ifndef CHAPTER_6_H
#define CHAPTER_6_H

int fact(int);

#endif

"fact.cc"

#include "Chapter6.h"

int fact(int n) {  // Ignore overflow
  if (n < 1) return n;
  int k = n;
  while (--n)
    k *= n;
  return k;
}

 factMain.cc

#include <iostream>
#include "Chapter6.h"

int main() {
  int n;
  while (std::cin >> n)
    std::cout << n << "! = " << fact(n) << std::endl;

  return 0;
}