enum Example {
    One,
    Two,
    Three
}
fn main() {
    let e1 = Example::One;

    let v1 = match e1 {
        Example::One => 1,
        Example::Two => 2,
        Example::Three => 3,
    };

    let e2 = Example::Three;
    let v2 = match e2 {
        Example::Two => 2,
        _ => 99,
    };

    print!("{} + {} = {}", v1, v2, v1 + v2);
}