supply use case

abstract-factory/AbstractFactory.cpp

@@ -156,6 +156,12 @@ int main()
   ProductA *p2 = factoryY->createProductA();
   std::cout << "Product: " << p2->getName() << std::endl;
 
+  ProductB *p3 = factoryX->createProductB();
+  std::cout << "Product: " << p3->getName() << std::endl;
+
+  ProductB *p4 = factoryY->createProductB();
+  std::cout << "Product: " << p4->getName() << std::endl;
+
   delete p1;
   delete p2;
 

decorator/Decorator.cpp

@@ -99,12 +99,11 @@ int main()
 {
   ConcreteComponent  *cc = new ConcreteComponent();
   ConcreteDecoratorB *db = new ConcreteDecoratorB( cc );
-  ConcreteDecoratorA *da = new ConcreteDecoratorA( db );
+  Component *component = new ConcreteDecoratorA( db );
 
-  Component *component = da;
   component->operation();
 
-  delete da;
+  delete component;
   delete db;
   delete cc;
 

flyweight/Flyweight.cpp

@@ -111,6 +111,8 @@ int main()
   FlyweightFactory *factory = new FlyweightFactory;
   factory->getFlyweight(1)->operation();
   factory->getFlyweight(2)->operation();
+  // already exist in pool
+  factory->getFlyweight(1)->operation();
   delete factory;
   return 0;
 }

strategy/Strategy.cpp

@@ -90,8 +90,14 @@ class Context
 
 int main()
 {
-  Context context( new ConcreteStrategyA() );
-  context.contextInterface();
+  Context context1( new ConcreteStrategyA() );
+  context1.contextInterface();
 
+  Context context2( new ConcreteStrategyB() );
+  context2.contextInterface();
+
+  Context context3( new ConcreteStrategyB() );
+  context3.contextInterface();
+
   return 0;
 }