factorymethod.cpp

这是一些c++例程

namespace DesignPattern_FactoryMethod
{    /*工厂方法所创建的对象的接口*/
	class Product { /*...*/ } ;     /*实现Product接口*/
	class ConcreteProduct : public Product { /*...*/ } ; 
	//定义类 class Creator
	class Creator
	{
	public:
		virtual Product* CreateProduct() = 0 ;
		void Operate() ;
	} ;
	void Creator::Operate()/*工厂方法*/
	{
		//...
		Product *p = CreateProduct() ;
		//...
	}
	//定义class ConcreteCreator
	class ConcreteCreator : public Creator
	{
	public:
		virtual Product* CreateProduct() { return new ConcreteProduct() ; }/*重定义CreateProduct()返回一个ConcreteProduct实例*/
	} ;
}
void main()
{
	using namespace DesignPattern_FactoryMethod ;
	ConcreteCreator p ;
	p.Operate() ;
}