Factory Pattern

horizonhyg

C:\Documents and Settings\Administrator\桌面\编程\设计模式\Factory.jpg

刚开始学习设计模式，还不是很懂，慢慢来吧，首先应该是Factory Pattern,下面是代码：
Product.h
#ifndef _PRODUCT_H_#define _PRODUCT_H_#include <iostream>using namespace std;class Product{public:    virtual ~Product()=0;protected:    Product();    private:};class ConcreteProductA :public Product{public:    ~ConcreteProductA();    ConcreteProductA();protected:private:};class ConcreteProductB :public Product{public:    ~ConcreteProductB();    ConcreteProductB();protected:private:};#endif


Product.cpp

#include "Product.h"#include <iostream>using namespace std;Product::Product(){}Product::~Product(){}ConcreteProductA::ConcreteProductA(){    cout << "ConcreteProductA....." <<endl;}ConcreteProductA::~ConcreteProductA(){}ConcreteProductB::ConcreteProductB(){    cout << "ConcreteProductB....." <<endl;}ConcreteProductB::~ConcreteProductB(){}

Factory.h

#ifndef FACTORY_H_#define FACTORY_H_#include "Product.h"#include <iostream>using namespace std;class Product;class Factory{public:    virtual ~Factory()=0;    virtual Product* creatProductA()=0;    virtual Product* creatProductB()=0;protected:    Factory();private:};class ConcreteFactory:public Factory{public:    ConcreteFactory();    ~ConcreteFactory();    Product* creatProductA();    Product* creatProductB();protected:private:};#endif

Factory.cpp

#include "Factory.h"#include "Product.h"#include <iostream>using namespace std;Factory::Factory(){}Factory::~Factory(){}ConcreteFactory::ConcreteFactory(){    cout << "ConcreteFactory..."<<endl;}ConcreteFactory::~ConcreteFactory(){}Product* ConcreteFactory::creatProductA(){    return new ConcreteProductA();}Product* ConcreteFactory::creatProductB(){    return new ConcreteProductB();}

main.cpp

#include <iostream>#include "Factory.h"#include "Product.h"using namespace std;int main(){    Factory* factory = new ConcreteFactory();    Product* productA = factory->creatProductA();    Product* productB = factory->creatProductB();    return 0;}