// user.cpp

#include <iostream>
#include <string>
#include "utility.h"
#include "lists.h"

using namespace std;

int main()
{ list L;
  L.push(new useful("one", 11));
  L.push(new useful("two", 22));
  L.push(new useful("three", 33));
  L.push(new useful("four", 44));
  L.push(new useful("five", 55));
  cout << L << "\n";
  useful * x = L.pop();
  cout << * x << "\n";
  x->enlarge();
  cout << * x << "\n";
  cout << factorial(L.pop()->get_number() / 5) << "\n"; }