enum PictureCard {
    case jack
    case queen
    case king
    case joker
}

let card: PictureCard? = .joker

switch card {
case .jack:
    print("You have a Jack")
case .queen:
    print("You have a Queen")
case .king:
    print("You have a King")
default:
    print("Are you a Joker?")
}