composite.cpp

#include <iostream> 
#include <vector> 
using namespace std; 
  
class PageObject { 
public: 
    virtual void Add(PageObject a) 
    { 
    } 
    virtual void Remove() 
    { 
    } 
    virtual void Delete(PageObject a) 
    { 
    } 
}; 
  
class Page : public PageObject { 
public: 
    void Add(PageObject a) 
    { 
        cout << "something is added to the page" << endl; 
    } 
    void Remove() 
    { 
        cout << "soemthing is removed from the page" << endl; 
    } 
    void Delete(PageObject a) 
    { 
        cout << "soemthing is deleted from page " << endl; 
    } 
}; 
  
class Copy : public PageObject { 
    vector<PageObject> copyPages; 
  
public: 
    void AddElement(PageObject a) 
    { 
        copyPages.push_back(a); 
    } 
  
    void Add(PageObject a) 
    { 
        cout << "something is added to the copy" << endl; 
    } 
    void Remove() 
    { 
        cout << "something is removed from the copy" << endl; 
    } 
    void Delete(PageObject a) 
    { 
        cout << "something is deleted from the copy"; 
    } 
}; 
  
int main() 
{ 
    Page a; 
    Page b; 
    Copy allcopy; 
    allcopy.AddElement(a); 
    allcopy.AddElement(b); 
  
    allcopy.Add(a); 
    a.Add(b); 
  
    allcopy.Remove(); 
    b.Remove(); 
  
    return 0; 
}