//question 1)

Ensemble creerEnsembleVide()
{	
	Ensemble pe;
	pe=(Ensemble)malloc(sizeof(SEnsemble));
	pe->pelements=NULL;
	pe->nbElements=0;
	return pe;
}

//question 2)

Ensemble ajouterElement(Ensemble pe)
{
	Ensemble tmp;
	tmp=pe;
	while(tmp->pelements!=NULL)
	{
		tmp=tmp->pelements;
	}
	tmp->pelements=pelements;
	return pe;
}

//question 3)

Ensemble supprimerElement(Ensemble pe)
{