#include 
     
      #include
      
       #include
       
        using namespace std;class AbstractFile{	protected:		string name;	public: 	    AbstractFile(string n){	    	name=n;	    } 	    virtual void Display()=0; // 纯虚函数		 }; class File:public AbstractFile{	public:			File(string n):AbstractFile(n){}				void Display(){			cout<
        
         <
         
           objvec;  //迭代器 	public:		Folder(string n):AbstractFile(n){}		void add(AbstractFile *t){			objvec.push_back(t);		}		void Display(){			vector
          
           ::iterator ivec; cout<
           
            <
            
             Display(); }};int main(int argc, char** argv) { Folder *root=new Folder("C:\\"); File *pa=new File("a.txt"); File *pb=new File("b.txt"); Folder *paa=new Folder("aa"); File *p1=new File("1.cpp"); File *p2=new File("2.cpp"); root->add(pa); root->add(pb); root->add(paa); paa->add(p1); paa->add(p2); root->Display(); //调用Display（） delete root; delete pa ; delete pb ; delete p1; delete p2; delete paa; return 0;}