rustでfizzbuzz

gistfile1.rs

use std;

fn is_fizzbuzz(x:int) -> bool { x % 15 == 0}
fn is_fizz(x:int) -> bool { x % 3 == 0}
fn is_buzz(x:int) -> bool { x % 5 == 0}

fn fizzbuzz(n:int) -> str {
    ret
      if is_fizzbuzz(n) { "fizzbuzz"}
      else if is_fizz(n) { "fizz" }
      else if is_buzz(n) {"buzz" }
      else { int::str(n) };
}

fn main() {
    let x: int = 0;
    while true {
        if x >= 30 { break;}
        x += 1;
        std::io::println(fizzbuzz(x));
    }
}