c++设计模式--组合模式

 // CompositePattern.cpp : 定义控制台应用程序的入口点。//res:http://www.cnblogs.com/tiandsp/archive/2012/06/26/2563575.html#include "stdafx.h"#include <iostream>#include <string>#include <vector>using namespace std;class Composite{public:Composite():_name(""){}Composite(string name):_name(name){}virtual ~Composite(){}virtual void operation()=0;    virtual void add(Composite*){}virtual void del(Composite*){}virtual Composite* find(int index){return NULL;}protected:string _name;};class Leaf : public Composite{public:Leaf(){}Leaf(string name){_name=name;}virtual ~Leaf(){}void operation(){cout<<_name<<endl;}};class subComposite : public Composite{public:subComposite():level(0){}subComposite(string name):level(0){_name=name;}virtual ~subComposite(){}void add(Composite*);void del(Composite*);Composite* find(int index);void operation();private:vector<Composite*> v_pcom;int level;};void subComposite::add(Composite* com){level++;v_pcom.push_back(com);}void subComposite::del(Composite* com){v_pcom.pop_back();}Composite* subComposite::find(int index){return v_pcom[index];}void subComposite::operation(){for(int i=0;i<level;i++)cout<<"+";cout<<_name<<endl;vector<Composite*>::iterator it;for (it=v_pcom.begin();it!=v_pcom.end();it++){(*it)->operation();}}int main(){Composite* psubcom=new subComposite("动物");Composite* psubcom1=new subComposite("非哺乳动物");Composite* pleaf1=new Leaf("鸟");Composite* pleaf2=new Leaf("鱼");Composite* psubcom2=new subComposite("哺乳动物");Composite* pleaf3=new Leaf("人");    psubcom1->add(pleaf1);psubcom1->add(pleaf2);psubcom2->add(pleaf3);psubcom->add(psubcom1);psubcom->add(psubcom2);psubcom->operation();delete pleaf1;delete pleaf2;delete pleaf3;delete psubcom1;delete psubcom2;delete psubcom;system("pause");return 0;}