Factory mode of design mode (c + +)

The Factory mode has two major functions:

(1), defines the interface to create objects, encapsulates the creation of objects;

(2), so that the materialized class work is deferred to the sub-class.

//Product.h#ifndef _product_h_#define_product_h_classproduct{ Public: virtual void~Product ();protected: void Product ();Private:   }classConcreteproduct: Publicproduct{ Public: void Concreteproduct (); void~concreteproduct ();protected:Private:}#endif //_product_h_

// Product.cpp " Product.h "  <iostream>usingnamespace  std; void Product::P roduct () {} void product::~Product () {}void  concreteproduct::concreteproduct () {}void concreteproduct::~concreteproduct () {}

//Factory.h#ifndef _factory_h_#define_factory_h_classProduct;classfactory{ Public:    Virtual void~Factory (); VirtualProduct *createproduct () =0; protected:    voidFactory ();Private:};classConcretefactory: Publicfactory{ Public:    voidconcretefactory (); void~concretefactory (); Product*createproduct ();protected:Private:    }#endif //_factory_h_

//Fatory.cpp#include"Factory.h"#include"Product.h"#include<iostream>using namespacestd;voidfactory::factory () {}voidfactory::~Factory () {}voidconcretefactory::concretefactory () {}voidconcretefactory::concretefactory () {}product concretefactory::createproduct () {concreteproduct cproduct=Newconcreteproduct; returnproduct;}

//main.cpp#include"Factory.h"#include"Product.h"#include<iostream>using namespacestd;intMainintargcChar*argv[]) {Factory*FAC =Newconcretefactory; Product*p = fac->createproduct (); return 0;}

Factory mode of design mode (c + +)