AbstractFactory Pattern（抽象工厂模式）

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/*Product.h*/#ifndef PRODUCT_H#define PRODUCT_Hclass AbstractProductA{public:virtual ~AbstractProductA();protected:AbstractProductA();private:};class AbstractProductB{public:virtual ~AbstractProductB();protected:AbstractProductB();private:};class ProductA1:public AbstractProductA{public:ProductA1();~ProductA1();protected:private:};class ProductA2:public AbstractProductA{public:ProductA2();~ProductA2();protected:private:};class  ProductB1:public AbstractProductB{public:ProductB1();~ProductB1();protected:private:};class ProductB2:public AbstractProductB{public:ProductB2();~ProductB2();protected:private:};#endif

/*Product.cpp*/#include "Product.h"#include <iostream>AbstractProductA::AbstractProductA(){}AbstractProductA::~AbstractProductA(){}AbstractProductB::AbstractProductB(){}AbstractProductB::~AbstractProductB(){}ProductA1::ProductA1(){std::cout<<"ProductA1..."<<std::endl;}ProductA1::~ProductA1(){}ProductA2::ProductA2(){std::cout<<"ProductA2..."<<std::endl;}ProductB1::ProductB1(){std::cout<<"ProductB1..."<<std::endl;}ProductB1::~ProductB1(){}ProductB2::ProductB2(){cout<<"ProductB2"<<std::endl;}ProductB2::~ProductB2(){}

/*AbstractFactory.h*/#ifndef ABSTRACTFACTORY_H#define ABSTRACTFACTORY_Hclass AbstractProductA;class AbstractProductB;class AbstractFactory{public:virtual ~AbstractFactory();virtual AbstractProductA *CreateProductA()=0;virtual AbstractProductB *CreateProductB()=0;protected:AbstractFactory();private:};class ConcreteFactory1:public AbstractFactory{public:ConcreteFactory1();~ConcreteFactory1();AbstractProductA *CreateProductA();AbstractProductB *CreateProductB();protected:private:};class ConcreteFactory2::public AbstractFactory{public:ConcreteFactory2();~ConcreteFactory2();AbstractProductA *CreateProductA();AbstractProductB *CreateProductB();protected:private:};#endif

/*AbstractFactory.cpp*/#include "AbstractFactory.h"#include "Product.h"#include <iostream>AbstractFactory::AbstractFactory(){}AbstractFactory::~AbstractFactory(){}ConcreteFactory1::ConcreteFactory1(){}ConcreteFactory1::~ConcreteFactory1(){}AbstractProductA *ConcreteFactory1::CreateProductA(){return new ProductA1();}AbstractProductB *ConcreteFactory1::CreateProductB(){return new ProductB1();}ConcreteFactory2::ConcreteFactory2(){}ConcreteFactory2::~ConcreteFactory2(){}AbstractProductA *ConcreteFactory2::CreateProductA(){return new ProductA2();}AbstractProductB *ConcreteFactory2::CreateProductB(){return new ProductB2();}

/*main.cpp*/#include "AbstractFactory.h"int main(){AbstractFactory *cf1=new ConcreteFactory1();cf1->CreateProductA();cf1->CreateProductB();AbstractFactory *cf2=new ConcreteFactory2();cf2->CreateProductA();cf2->CreateProductB();return 0;}

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