public static RegNumber AssignRegNumber()
{
if (instance == null)
{
instance = new RegNumber();
}
instance.Number++;
return(instance);
}
public Registrant(string name, DateTime dateOfBirth, Address address, long phoneNumber) : this(name, dateOfBirth, address, phoneNumber, RegNumber.AssignRegNumber().Number)
{
}
public Club(string name, Address address, long phoneNumber) : this(name, address, phoneNumber, RegNumber.AssignRegNumber().Number)
{
}