ch17_2.cpp

本文档是C＋＋程序设计教程系列的部分辅助代码。

//**********************
//**    ch17_2.cpp    **
//**********************

#include<iostream.h>

class Furniture{
public:
  Furniture(){}
  void SetWeight(int i){ weight =i; }
  int GetWeight(){ return weight; }
protected:
  int weight;
};

class Bed :public Furniture{
public:
  Bed(){}
  void Sleep(){ cout <<"Sleeping...\n"; }
};

class Sofa :public Furniture{
public:
  Sofa(){}
  void WatchTV(){ cout <<"Watching TV.\n"; }
};

class SleeperSofa :public Bed, public Sofa{
public:
  SleeperSofa() :Sofa(), Bed(){}
  void FoldOut(){ cout <<"Fold out the sofa.\n"; }
};

void main()
{
  SleeperSofa ss;
  ss.SetWeight(20);        //编译出错！模糊的SetWeight成员
  Furniture* pF;
  pF =(Furniture*)&ss;     //编译出错！模糊的Furniture*
  cout <<pF->GetWeight() <<endl;
}