设计模式组成模式实现C++

/*********************************
*设计模式--组成模式实现
*C++语言
*Author：WangYong
*Blog:http://www.cnblogs.com/newwy
********************************/
#include <iostream>
#include <vector>
using namespace std;
class Component
{
	public:
	Component(){}
	~Component(){}
	virtual void Operation() = 0;
	virtual void Add(const Component &){}
	virtual void Remove(const Component&){}
	virtual Component *GetChild(int){return 0;}
};
class Composite:public Component
{
	public:
	Composite(){vector<Component*>::iterator itend = comVec.begin();}
	~Composite(){}
	void Operation()
	{
		vector<Component*>::iterator comIter = comVec.begin();
		for(;comIter != comVec.end(); comIter++)
		{
			(*comIter)->Operation();
		}
	}
	void Add(Component *com){comVec.push_back(com);}
	void Remove(Component *com){comVec.erase(&com);}
	Component * GetChild(int index){return comVec[index];}
	private:
	vector<Component*> comVec;
};
class Leaf:public Component
{
	public:
	Leaf(){}
	~Leaf(){}
	void Operation(){cout<<"Leaf operation.."<<endl;}
};
int main()
{
	Leaf *l = new Leaf();
	l->Operation();
	Composite *com = new Composite();
	com->Add(l);
	com->Operation();
	Component *ll = com->GetChild(0);
	ll->Operation();
	return 0;
}