ASD Pb 18 liste stergere pare

/** p18 lista stergere pare*/
#include<iostream>
using namespace std;

class Lista;

class Nod{
private:
    int info;
    Nod * next;
public:
    Nod(int info=0, Nod *p=NULL){
        this->info=info;
        this->next=next;
    }
    int getInfo(){
        return info;
    }
    friend class Lista;
};

class Lista{
private:
    Nod *prim;
    Nod * ultim;
public:
    Lista(){
        prim=ultim=NULL;
    }
    void adaugaLaSfarsit(int info);
    void afisare();
    void stergerePare();
};

void Lista:: adaugaLaSfarsit(int info){
    Nod *p=new Nod(info);
    if(prim==NULL){
        prim=ultim=p;
    }else{
        p->next=NULL;
        ultim->next=p;
        ultim=p;
    }
}
void Lista:: afisare(){
    Nod *p=prim;
    cout<<"[";
    while(p!=NULL){
        cout<<p->info<<"   ";
        p=p->next;
    }
    cout<<"]";
}

void Lista:: stergerePare(){
    while(prim!=NULL && prim->info%2==0){
        Nod *temp=prim;;
        prim=prim->next;
        delete temp;
    }
    if(prim!=NULL){
        Nod *p=prim;
        Nod *q=p->next;///ordinea este p,q
        while(q!=NULL){
            if(q->info%2==0){
                p->next=q->next;
                delete q;
                q=p->next;
            }else{
                p=q;
                q=q->next;
            }
        }
    }
}

int main(){
    Lista lista;
    lista.adaugaLaSfarsit(8);
    lista.adaugaLaSfarsit(2);
    lista.adaugaLaSfarsit(10);
    lista.adaugaLaSfarsit(4);
    lista.adaugaLaSfarsit(11);
    lista.adaugaLaSfarsit(6);
    lista.afisare();
    lista.stergerePare();
    lista.afisare();
    return 0;
}