#pragma once
/////////////////////////////////////////////////////////////////////////
// F_TopLevel.h - demonstrate how class structures becomes flexible    //
//                                                                     //
// Jim Fawcett, CSE775 - Distributed Objects, Summer 2010              //
/////////////////////////////////////////////////////////////////////////
/*
   Note:
   IF_LowerLevel.h contains an interface and factory, but no implementation
   details, so any change to the implementation of LowerLevel will not
   affect F_TopLevel or its clients.

   Any class that implements the IF_LowerLevel interface can be used in
   place of F_LowerLevel with no change to either F_TopLevel or its clients.
*/
#include "IF_LowerLevel.h"

class F_TopLevel
{
public:
  F_TopLevel(void);
  ~F_TopLevel(void);
  void say();
private:
  IF_LowerLevel* pLL;  // another improvement
};