struct Cat {
    name string
}

struct Dog {
    name string
    age  int
}

struct Bird {
    name    string
    can_fly bool
}

type Animal = Bird | Cat | Dog

fn make_conditional(which int) Animal {
    result := if which == 0 {
        Animal(Cat{
            name: 'whiskers'
        })
    } else {
        Animal(Bird{
            name:    'tweety'
            can_fly: true
        })
    }
    return result
}

fn get_name(a Animal) string {
    match a {
        Cat { return a.name }
        Dog { return a.name }
        Bird { return a.name }
    }
}

fn main() {
    a := make_conditional(0)
    b := make_conditional(1)
    println(get_name(a))
    println(get_name(b))
}