c++设计模式（一）工厂模式

c++设计模式（一）工厂模式

#include <iostream>using namespace std;class Product{public:    virtual ~Product() = 0{}protected:    Product(){}};class ConcreteProduct:public Product{public:    ~ConcreteProduct(){}    ConcreteProduct(){                         //3        cout<<"ConcreteProduct...."<<endl;    }};class Factory{public:    virtual ~Factory() = 0{}    virtual Product* CreateProduct() = 0;protected:    Factory(){}};class ConcreteFactory:public Factory{public:    ~ConcreteFactory(){}    ConcreteFactory(){                          //1        cout<<"ConcreteFactory....."<<endl;    }    Product* CreateProduct(){                   //2        return new ConcreteProduct();    }};int main (){    Factory* fac = new ConcreteFactory();    Product* p1 = fac->CreateProduct();    Product* p2 = fac->CreateProduct();    return 0;}