C++设计模式之简单工厂模式实例

 
  delete ProductFactory;
  ProductFactory = NULL;
 
  delete productObjA;
  productObjA = NULL;
 
  delete productObjB;
  productObjB = NULL;   
 
  delete productObjC;
  productObjC = NULL;
 
  return 0;
}