c++ 数据封装模式之三： 抽象工厂模式

// AbstractFactory.cpp : Defines the entry point for the console application.   
//   
  
#include "stdafx.h"   
#include "ostream.h"   
  
//定义抽象类   
class CAnimal   
{   
protected:   
    int  m_Weight;

// AbstractFactory.cpp : Defines the entry point for the console application.   
//   
  
#include "stdafx.h"   
#include "ostream.h"   
  
//定义抽象类   
class CAnimal   
{   
protected:   
    int  m_Weight;  //重量   
public:   
    virtual void Cry() = 0;   
};   
  
class CPlant   
{   
protected:   
    int m_Height;   
public:   
    virtual void Grow()=0;   
};   
//定义具体类   
class CFish:  public CAnimal   
{   
public:   
    virtual void Cry()   
    {   
        cout <<"I am Fish!/n";   
    }   
};   
class CBird : public CAnimal   
{   
public:   
    virtual void Cry()   
    {   
        cout <<"I am Bird!/n";   
    }   
};   
class  CFlower: public CPlant   
{   
public:   
    virtual void Grow()   
    {   
        cout<< "Flower is Growing!/n" ;   
    }   
};   
class CTree: public CPlant   
{   
public:   
    virtual void Grow()   
    {   
        cout << "Tree is Growing!/n";   
    }   
};   
//定义工厂抽象类   
class CFactory   
{   
public:   
    virtual CAnimal* CreateObj() = 0;   
    virtual CPlant * CreatePlant()=0;   
  
};   
//定义工厂具体类   
class CFactory1 : public CFactory   
{   
public:   
    virtual CAnimal* CreateObj()   
    {   
        return new CBird();   
    }   
    virtual CPlant * CreatePlant()   
    {   
        return new CFlower();   
    }   
  
};   
class CFactory2: public CFactory   
{   
public:   
    virtual CAnimal* CreateObj()   
    {   
        return new CFish();   
    }   
    virtual CPlant * CreatePlant()   
    {   
        return new CTree();   
    }   
};   
  
int main(int argc, char* argv[])   
{   
    CAnimal* pAnimal1,* pAnimal2;   
    CPlant* pPlant1,* pPlant2;   
  
    CFactory * pFactory1,* pFactory2;   
  
    pFactory1 = new CFactory1();   
    pFactory2 = new CFactory2();   
  
    pAnimal1 =  pFactory1->CreateObj();   
    pPlant1 = pFactory1->CreatePlant();   
  
    pAnimal2 = pFactory2->CreateObj();   
    pPlant2 = pFactory2->CreatePlant();   
  
    pAnimal1->Cry();   
    pAnimal2->Cry();   
    pPlant1->Grow();   
    pPlant2->Grow();   
  
    delete pAnimal1;   
    delete pAnimal2;   
    delete pPlant1;   
    delete pPlant2;   
  
  return 0;   
}