quest

quest keeps your progress, streaks, and scores tied to your account — so you can pick up on any device.

Synced everywhere. Progress follows you across laptop and phone.

Streaks & stats. See your daily run and every score over time.

Your profile. A name and avatar for the work you do here.

We only use Google to sign you in and sync progress. No posting, no contacts — ever.

Core Beginner

02 Control flow

Loops and conditionals: sum a range, then write the classic fizzbuzz for a single number.

Step 2 / 3

Return "fizz" / "buzz" / "fizzbuzz", or the number, in fizzbuzz.

Hints

if/else is an expression; format!("{}", n) turns a number into a String.

02_control_flow.rs

// 15 -> "fizzbuzz", 3 -> "fizz", 5 -> "buzz", else the number as a String
fn fizzbuzz(n: u32) -> String {
    todo!()
}

// 15 -> "fizzbuzz", 3 -> "fizz", 5 -> "buzz", else the number as a String
fn fizzbuzz(n: u32) -> String {
    todo!()
}

Reset to starterCompiled in a sandbox; hidden checks must pass.

Reveal solution

fn fizzbuzz(n: u32) -> String {
    if n % 15 == 0 {
        String::from("fizzbuzz")
    } else if n % 3 == 0 {
        String::from("fizz")
    } else if n % 5 == 0 {
        String::from("buzz")
    } else {
        format!("{}", n)
    }
}

Sign in to start training

02 Control flow