public string RentBog(int id, int days, Kunder kunde)
{
Bog[id].isRented = true;
Bog[id].dueDate = days;
Bog[id].rentedBy = kunde;
kunde.AddBog(Bog[id]);
return("You have rented " + Bog[id].title + " in " + Bog[id].dueDate + " days");
}
public void AddKunde(Kunder Name)
{
Kunder.Add(Name);
}