設計模式——抽象工廠模式（C++實現）

  1 #include <iostream>
  2 #include <string>
  3 
  4 using namespace std;
  5 
  6 
  7 class STAbstractProductA
  8 {
  9 public:
 10         virtual void use() = 0;
 11 };
 12 
 13 class STProductA1: public STAbstractProductA
 14 {
 15 public:
 16         virtual void use()
 17         {
 18                 cout<< "use ProductA1............"<< endl;
 19         }
 20 };
 21 
 22 class STProductA2: public STAbstractProductA
 23 {
 24 public:
 25         virtual void use()
 26         {
 27                 cout<< "use ProductA2............"<< endl;
 28         }
 29 };
 30 
 31 class STAbstractProductB
 32 {
 33 public:
 34         virtual void eat() = 0;
 35 };
 36 
 37 class STProductB1: public STAbstractProductB
 38 {
 39 public:
 40         virtual void eat()
 41         {
 42                 cout<< "eat ProductB1............"<< endl;
 43         }
 44 };
 45 
 46 class STProductB2: public STAbstractProductB
 47 {
 48 public:
 49         virtual void eat()
 50         {
 51                 cout<< "eat ProductB2............"<< endl;
 52         }
 53 };
 54 
 55 class STAbstractFactory
 56 {
 57 public:
 58         virtual STAbstractProductA* CreateProductA() = 0;
 59         virtual STAbstractProductB* CreateProductB() = 0;
 60 };
 61 
 62 class STConcreteFactoryA: public STAbstractFactory
 63 {
 64 public:
 65         virtual STAbstractProductA* CreateProductA()
 66         {
 67                 return new STProductA1;
 68         }
 69         virtual STAbstractProductB* CreateProductB()
 70         {
 71                 return new STProductB1;
 72         }
 73 };
 74 
 75 class STConcreteFactoryB: public STAbstractFactory
 76 {
 77 public:
 78         virtual STAbstractProductA* CreateProductA()
 79         {
 80                 return new STProductA2;
 81         }
 82         virtual STAbstractProductB* CreateProductB()
 83         {
 84                 return new STProductB2;
 85         }
 86 };
 87 
 88 int main(int argc, char* argv[])
 89 {
 90         STAbstractFactory* fc = new STConcreteFactoryA();
 91         STAbstractProductA* pa = fc->CreateProductA();
 92         STAbstractProductB* pb = fc->CreateProductB();
 93 
 94         pa->use();
 95         pb->eat();
 96 
 97         STAbstractFactory* fc2 = new STConcreteFactoryB();
 98         STAbstractProductA* pa2 = fc2->CreateProductA();
 99         STAbstractProductB* pb2 = fc2->CreateProductB();
100 
101         pa2->use();
102         pb2->eat();
103 
104         return 0;
105 }
106 ////////////////////////////////////////
107 [root@ ~/learn_code/design_pattern/9_abstract_factory]$ ./abstract_factory       
108 use ProductA1............
109 eat ProductB1............
110 use ProductA2............
111 eat ProductB2............