FAdaugareFinalLLDI

void AdaugareFinal(nod * & prim, nod * & ultim, int x)
{
    nod* aux = new nod;
    aux->info = x;
    if(prim == NULL)
    {
        aux->pre = NULL;
        aux->ant = NULL;
        prim = aux;
        ultim = prim;
    }
    else
    {
        aux->ant=ultim;
        ultim->pre=aux;
        aux->pre=NULL;
        ultim=aux;
    }
}