GOOD：整体和部分可以被一致对待（如WORD中复制一个文字、一段文字、一篇文章都是一样的操作）

 

 

 

#ifndef __COMPOSITE_MODEL__#define __COMPOSITE_MODEL__ #include 
     
      #include 
      
       #include 
       
        using namespace std;class Component{public:    string m_strName;    Component(string strName)    {        m_strName = strName;    }    virtual void add(Component* com) = 0;    virtual void display(int nDepth) = 0;};class Leaf : public Component{public:    Leaf(string strName) : Component(strName){}    virtual void add(Component* com)    {        cout<<"leaf can't add"<
        
          m_component;public:    Composite(string strName) : Component(strName) {}    virtual void add(Component* com)    {        m_component.push_back(com);    }    virtual void display(int nDepth)    {        string strtemp;        for(int i=0; i
         
          ::iterator iter = m_component.begin();        while(iter!=m_component.end())        {            (*iter)->display(nDepth+2);            iter++;        }    }};#endif //__COMPOSITE_MODEL__/*#include "CompositeModel.h"int _tmain(int argc, _TCHAR* argv[]){Composite* p = new Composite("小王");p->add(new Leaf("小李"));p->add(new Leaf("小赵"));Composite* p1 = new Composite("小小五");p1->add(new Leaf("大三"));p->add(p1);p->display(1);return 0;}*/