Fizzbuzz

The following example implements the fizzbuzz game.

The rules are:

• A number divisible by 3 returns Fizz
• A number divisible by 5 returns Buzz
• A number which is divisible by 3 & 5 returns Fizzbuzz
• Any other number entered is returned back to the user

State

Let's define an enum which contains the state of the game.

enum State {
    Fizz: (),
    Buzz: (),
    FizzBuzz: (),
    Other: u64,
}

Implementation

We can write a function which takes an input and checks its divisibility. Depending on the result a different State will be returned.

fn fizzbuzz(input: u64) -> State {
    if input % 15 == 0 {
        State::FizzBuzz
    } else if input % 3 == 0 {
        State::Fizz
    } else if input % 5 == 0 {
        State::Buzz
    } else {
        State::Other(input)
    }
}