void ispisi_i_prebroji(node *head) {
    unsigned short i = 0;
    char datoteka[20];
    char red[80];
    cout << "Naziv datoteke?" << endl;
    cin >> datoteka;
    fstream dat;
    dat.open(datoteka, ios::binary | ios::in);
    while (1) {
        dat.getline(red, sizeof(red), '\n');
        if(head) {
            i++;
            head = head->next;
        }
        if(dat.eof()) break;
        cout << red << endl;
    };

    cout << "Ima " << i << " kontakata." << endl;
}