设计模式——工厂方法模式（C++实现）

#include <iostream>
#include <string>

using namespace std;

class CProduct
{
public:
        virtual void Use() = 0;
};

class CConcreteProductA: public CProduct
{
public:
        virtual void Use()
        {
                cout<< "ConCreteProductA....."<< endl;
        }
};

class CConcreteProductB: public CProduct
{
public:
        virtual void Use()
        {
                cout<< "ConCreteProductB....."<< endl;
        }
};

class CFactory
{
public:
        virtual CProduct* FactoryMethod() = 0;
};

class CConcreteFactoryA: public CFactory
{
public:
        virtual CProduct* FactoryMethod()
        {
                return new CConcreteProductA();
        }
};

class CConcreteFactoryB: public CFactory
{
public:
        virtual CProduct* FactoryMethod()
        {
                return new CConcreteProductB();
        }
};

int main(void)
{
        CFactory* cFactoryA = new CConcreteFactoryA();
        CProduct* cProductA = cFactoryA->FactoryMethod();

        cProductA->Use();

        delete cFactoryA;
        delete cProductA;


        CFactory* cFactoryB = new CConcreteFactoryB();
        CProduct* cProductB = cFactoryB->FactoryMethod();

        cProductB->Use();

        delete cFactoryB;
        delete cProductB;

        return 0;
}
//////////////////////////////
[wenchaozeng@~/learn_code/design_pattern/6_factory_method]$ ./FactoryMethod       
ConCreteProductA.....
ConCreteProductB.....

参考:http://design-patterns.readthedocs.io/zh_CN/latest/creational_patterns/factory_method.html