Factory 模式

 1 ////////////Factory.h////////////////////////
 2 #ifndef _FACTORY_H_
 3 #define _FACTORY_H_
 4 
 5 class Product ;
 6 
 7 class Factory
 8 {
 9 public:
10     virtual ~Factory() = 0 ;
11 
12     virtual  Product* CreatProduct() = 0;
13 
14 protected:
15     Factory();
16 private:
17 };
18 
19 class ConcreteFactory : public Factory 
20 {
21 public:
22     ~ConcreteFactory();
23     ConcreteFactory();
24     Product* CreatProduct();
25 protected:
26 private:
27 };
28 
29 #endif

 1 ////////////Factory.cpp////////////////////////
 2 #include "Factory.h"
 3 #include "Product.h"
 4 
 5 #include <iostream>
 6 using namespace std;
 7 
 8 Factory::Factory()
 9 {
10 
11 }
12 
13 Factory::~Factory()
14 {
15 
16 }
17 
18 ConcreteFactory::ConcreteFactory()
19 {
20     cout<<"ConcreteFactory....."<<endl; 
21 }
22 
23 ConcreteFactory::~ConcreteFactory()
24 {
25 
26 }
27 
28 Product* ConcreteFactory::CreatProduct()
29 {
30     return new ConcreteProduct();
31 }

 1 ////////////Product.h////////////////////////
 2 #ifndef  _PRODUCT_H_
 3 #define  _PRODUCT_H_
 4 class Product
 5 {
 6 public:
 7     virtual ~Product()=0;
 8 
 9 protected:
10     Product();
11 private:
12 };
13 
14 
15 class ConcreteProduct : public Product
16 {
17 public:
18     virtual ~ConcreteProduct();
19     ConcreteProduct();
20 protected:
21 private:
22 };
23 
24 
25 #endif

 1 ////////////Product.cpp////////////////////////
 2 #include "Product.h"
 3 #include <iostream>
 4 using namespace std;
 5 
 6 Product::Product()
 7 {
 8 
 9 }
10 
11 Product::~Product()
12 {
13 
14 }
15 
16 ConcreteProduct::ConcreteProduct()
17 {
18     cout<<"ConcreteProduct"<<endl ;
19 }
20 
21 ConcreteProduct::~ConcreteProduct()
22 {
23 
24 }

 1 ////////////main.cpp////////////////////////
 2 #include "Factory.h"
 3 #include "Product.h"
 4 
 5 #include <iostream>
 6 using namespace std;
 7 
 8 int main()
 9 {
10     Factory *fac  = new ConcreteFactory() ;
11 
12     Product *p = fac->CreatProduct();
13     getchar();
14     return 0 ;
15 }

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原文地址：https://www.cnblogs.com/csxcode/p/3687325.html