gistfile1.txt

use std::io

func fizzbuzz(n: Int): String
ensure out ~= %r{^fizz|buzz|fizzbuzz|\d+$}
{
    switch {
        case n %% 15 => "fizzbuzz"
        case n %% 5 => "buzz"
        case n %% 3 => "fizz"
        case true => itoa(n)
    }
}

proc main() {
    1..100
    |> map(fizzbuzz)
    |> each(io::println)
}