class HovedprogramPersoner{

    public static void main(String[] args) {


        Person p = new Person();
        Student s = new Student();
        Underviser u = new Underviser();
        Masterstudent m = new Masterstudent();


        Person person = new Person();
        Person student = new Student();
        Person underviser = new Underviser();
        Person masterstudent = new Masterstudent();


        Person[] liste = new Person[4];

        liste[0] = person;
        liste[1] = student;
        liste[2] = underviser;
        liste[3] = masterstudent;

        for (int i = 0; i < liste.length; i++){

            liste[i].skrivInfo();

        }
    }
}