void DB::add(list<node> * & list)
{
    list<node> list;
    node *p;
    char* file = "duomenys.txt";
    ifstream f(file);
    while(f)
    {
        f >> p->vard >> p->pav >> p->miestas >> p->laikas >> p->nr >> p->nr1;
        list.push_front(p);
    }
    cout << "Duomenys suvesti" << endl;
}

void DB::del(list<node> * & list)
{
    string tmp;
    cout << "Iveskite varda bonento kuri noretumete istrinti is duomenu bazes: " << endl;
    cin >> tmp;
    list<node>::iterator Iterator = list.begin();
    while(Iterator != list.end())
    {
        if (Iterator->vard == tmp)
        {
            list.erase(Iterator);
        }
    }
}