class Link
{
public:
	Link ( Link* pNext )  : _pNext(pNext) {}

	Link*   Next () const { return _pNext; }

private:
	Link*   _pNext;

};

class List
{
public:
int cu;
	List (): _pHead (0), cu(0) {}
	// ~List ();
	//void Add ();
	//const Link * Get();
	const Link* GetHead () const { return _pHead; }
//protected:
	Link* _pHead;


~List ()
{
	//cout<<endl<<" ~List() activated";
	// free the list
	while ( _pHead != 0 )
	{
		Link* pLink = _pHead;
		_pHead = _pHead->Next(); // unlink pLink

		//cout<<endl<<" deleting ";
		delete pLink;
	}
}



void Add ()
{
	// add in front of the list
	Link* pLink = new Link ( _pHead );
	if(pLink != 0)
	{ _pHead = pLink; }
cu++;
}

const Link * Get()
{
return  GetHead();
}


};


//////////////////////////////////////////////////////
template<class T>
class TList : public List
{

public:
void Add()
   {
     //T* pLink = new T ( _pHead );
     Link* pLink = new T ( _pHead );
     _pHead = pLink;
   }


T * Get()   { return (T*)List::Get();}

TList() : List() {}

};