设计模式之工厂模式

时间：2010-08-04 来源：kokokowy

#include <iostream> using namespace std; /*
* 产品类
*/
class CBaseProduct
{
public:
virtual void Print() = 0;
}; class CDeriveProductOne:public CBaseProduct
{
public:
virtual void Print()
{
  cout << "hello one" << endl;
}
}; class CDeriveProductTwo:public CBaseProduct
{
public:
virtual void Print()
{
  cout << "hello Two" << endl;
}
}; /*
* 工厂类
*/ class CBaseFactory
{
public:
virtual CBaseProduct * MakeProduct(int) = 0;
}; class CDeriveFactory:public CBaseFactory
{
public:
virtual CBaseProduct * MakeProduct(int iFlag);
};
/*
* 生产产品子类的实例函数
*/
CBaseProduct *
CDeriveFactory::MakeProduct(int iFlag)
{
CBaseProduct *pProduct = NULL; try
{
  switch(iFlag)
  {
  case 1:
   pProduct = new CDeriveProductOne();
   break;
  case 2:
   pProduct = new CDeriveProductTwo();
   break;
  default:
   throw(0);
  }

}
catch(...)
{
  cout << "new obj failed" << endl;
} return pProduct;
} int main()
{
CBaseProduct *p = NULL;
CBaseFactory *f = new CDeriveFactory(); p = f->MakeProduct(2);

p->Print(); return 0;
}

相关阅读更多 +