Les listes chaînées

#include <iostream.h>
typedef void* T ;
class element
{
    friend class liste;
    T valeur;
    element *next;
    element(int a)
    {valeur=(T)a;next=NULL;}
};
class liste
{
  T courant;
  public :
    liste :: liste( const liste & uneListe )
{
  * this = uneListe;
}
    liste(){courant=NULL;}
	int vide ();
	void initialiser ();
	void ajouter (T);
    int longuer();
    void afficher();
};
int liste::vide()
{
    if(courant==NULL)
    return 1;
    else return 0;
}
void liste::initialiser()
{
    if(!vide())
	{
        courant = NULL;
	}
}
void liste::ajouter(T v)
{
	void* tmp=courant;
    void* nouveau = new T(v);
    ((*nouveau)->valeur) = v;
    nouveau->next = NULL;
    if(vide()) courant = nouveau;
	else
	{
		tmp = courant;
        while(tmp->next != NULL) tmp = tmp->next;
        tmp->next = nouveau;
    }
}

void liste::afficher()
{
	void* tmp;
    if(vide()) cout<<"                  !la liste est vide!\n";
    else
	{
		tmp = courant;
        while(tmp != NULL)
		{
			cout<<((tmp)->valeur)<<" ";
            tmp = tmp->next;
        }
        cout<<"   - longueur : "<<longuer()<<endl;
     }
}
int liste::longuer()
{
	int l=0;
    void* tmp = courant;
    while(tmp != NULL)
	{
		l++;
        tmp = tmp->next;
    }
    return l;
}

int main ()
{
	liste * L = new liste();
	int choix;
	int v;
	do
	{
      cout<<"1-Nouvelle Liste.\n";
      cout<<"2-Ajouter Element.\n";
      cout<<"6-Afficher.\n";
      cout<<"0-Quitter.\n";
	  cout<<"   -->choix(0-6):";	  cin>>choix;
      switch(choix)
	  {
		  case 1:
			  L->initialiser();
              break;
		  case 2:
			  cout<<" - Entrer une valeur : "; cin>>v;
			  L->ajouter((T)v);
              break;

         case 6:
			  L->afficher();
			  break;
 }
    
	}while(choix != 0);
	return 0;

}

C:\Program Files\CodeBlocks\MinGW\bin\..\lib\gcc\mingw32\3.4.5\..\..\..\..\include\c++\3.4.5\backward\backward_warning.h|32|warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the  header for the  header for C++ includes, or  instead of the deprecated header . To disable this warning use -Wno-deprecated.|
C:\Documents and Settings\user\Bureau\lis.cpp||In member function `void liste::ajouter(void*)':|
C:\Documents and Settings\user\Bureau\lis.cpp|46|error: `void*' is not a pointer-to-object type|
C:\Documents and Settings\user\Bureau\lis.cpp|47|error: `void*' is not a pointer-to-object type|
C:\Documents and Settings\user\Bureau\lis.cpp|52|error: `void*' is not a pointer-to-object type|
C:\Documents and Settings\user\Bureau\lis.cpp|52|error: `void*' is not a pointer-to-object type|
C:\Documents and Settings\user\Bureau\lis.cpp|53|error: `void*' is not a pointer-to-object type|
C:\Documents and Settings\user\Bureau\lis.cpp||In member function `void liste::afficher()':|
C:\Documents and Settings\user\Bureau\lis.cpp|123|error: `void*' is not a pointer-to-object type|
C:\Documents and Settings\user\Bureau\lis.cpp|124|error: `void*' is not a pointer-to-object type|
C:\Documents and Settings\user\Bureau\lis.cpp||In member function `int liste::longuer()':|
C:\Documents and Settings\user\Bureau\lis.cpp|136|error: `void*' is not a pointer-to-object type|
||=== Build finished: 8 errors, 1 warnings ===|