use std::fmt;
use std::string::String;

enum FizzBuzz {
        Fizz,
        Buzz,
        FizzBuzz,
        Other(i32)
}

fn toFizzBuzz (x: &i32) -> FizzBuzz {
        match x {
                _ if *x % 3 == 0 && *x % 5 == 0 => FizzBuzz::FizzBuzz,
                _ if *x % 3 == 0 => FizzBuzz::Fizz,
                _ if *x % 5 == 0 => FizzBuzz::Buzz,
                _ => FizzBuzz::Other(*x)
        }
}

impl fmt::Display for FizzBuzz {
        fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
                f.write_fmt(format_args!("{}", match self {
                        &FizzBuzz::Fizz => String::from_str("Fizz"),
                        &FizzBuzz::Buzz => String::from_str("Buzz"),
                        &FizzBuzz::FizzBuzz => String::from_str("FizzBuzz"),
                        &FizzBuzz::Other(x) => x.to_string()
                }));
                return Ok(());
        }
}

fn main () {
        let input = vec![1, 3, 5, 15, 20, 21];
        for x in input.iter().map(toFizzBuzz) {
                println!("{}", x);
        }
}