// B7.cpp - singleton creator

#include <iostream>
using namespace std;

class created {
  public:
    created() : myCount(++numObjects) { }
    void say() { cout << "\n  this is created object #" << myCount; }
  private:
    int myCount;
    static int numObjects;
};

int created::numObjects = 0;

////// start of required answer /////////////////////////////////////

class singleton {
  public:
    singleton() : pInstance(NULL) { }
    created* creator() {
      if(pInstance == NULL)
        pInstance = new created;
      return pInstance;
    }
  private:
    created *pInstance;
};
////// end of required answer ///////////////////////////////////////

void main() {

  singleton maker;
  created *pCreated = maker.creator();
  pCreated->say();

  created *pAnother = maker.creator();
  pAnother->say();

  cout << "\n\n";
}