#[derive(Debug)]

enum UpState {
    Alabama,
    Alaska,
}

enum Coin {
    Penny,
    Nickel,
    Dime,
    Quarter(UpState),
}

fn main() {
    let state = UpState::Alaska;
    let coin = Coin::Quarter(state);
    println!("the quater is {}",value_in_cents(coin));
    println!("x = {:?}", plus_one(None));
}

fn value_in_cents(coin: Coin) -> u8 {
    match coin {
        Coin::Penny => 1,
        Coin::Nickel => 5,
        Coin::Dime => 10,
        Coin::Quarter(state) => {
            println!("state quarter from {:?}",state);
            25
        }
    }
}


fn plus_one(x: Option<i32>) -> Option<i32> {
    match x {
        None => None,
        Some(i) => Some(i+1),
    }
}