public void RejectCard()
{
Console.WriteLine("Card has been rejected");
machine.SetMachineState(machine.GetNoCardState());
}
public void EnterPincode(uint pin)
{
Console.WriteLine("Correct pin has been entered");
machine.SetMachineState(machine.GetCorrectPinState());
}
public void InsertCard()
{
Console.WriteLine("Please enter your pincode");
machine.SetMachineState(machine.GetCardPresentState());
}