04_branches.cml

// if is an expression; match compares a name with literal patterns.
// Run: camel docs/tutorial/examples/04_branches.cml

func sign(x: int): string {
    return if x > 0 then 'positive' else if x < 0 then 'negative' else 'zero'
}

func kind(c: string): string {
    return match c {
        case 'a' | 'e' | 'i' | 'o' | 'u' => 'vowel'
        case ' ' => 'space'
        case _ => 'other'
    }
}

func grade(score: int): string {
    let band = score / 10
    return match band {
        case 10 | 9 => 'A'
        case 8 => 'B'
        case 7 => 'C'
        case _ => 'D'
    }
}

func main(): int sync {
    println(sign(5), sign(-2), sign(0))
    println(kind('e'), kind(' '), kind('x'))
    println(grade(95), grade(81), grade(42))
    return 0
}