fizzbuzz.rs

use std::io::{self, Write};

fn main() {
    let n = 600000;
    let out = io::stdout();
    let mut out = out.lock();
    for i in 1..n {
        let mut str = "".to_owned();
        if i % 3 == 0 {
            str.push_str("Fizz");
        }
        if i % 5 == 0 {
            str.push_str("Buzz");
        }
        if str.len() > 0 {
            writeln!(out, "{}", str).unwrap();
        } else {
            writeln!(out, "{}", i).unwrap();
        }
    }
}