My first quiz with Rullst · Lesson 05 / 08

Points, one step at a time

Now let's celebrate correct answers. Each correct answer gives a small group of points.

Let's discover together

1
One correct answer gives 5 points: ★ ★ ★ ★ ★. Two correct answers give two equal groups.
2
We can add 5 + 5. We can also write 2 × 5: two groups of five.
3
A function is a recipe: it receives values and gives back a result. Our recipe takes correct answers and points, and returns the total.

✦

YOUR MISSION

Use 2 correct answers and 5 points per answer. Count both groups before writing the total.

Take it with you

After finishing, change to 3 correct answers. Count 5 + 5 + 5 before testing. What is the new total?

Show me the Rust behind it

This part is optional. You don't need to memorize the code to continue.

fn score(correct: u8, points: u8) -> u16 {
    u16::from(correct) * u16::from(points)
}
assert_eq!(score(2, 5), 10);

At your own pace

My files and GitHub

Every lesson can become your own record: code, notes or a practice plan. Saving a file to GitHub is optional and does not change your XP.

Student guide

The editor and downloads open when this lesson is available to your account. Check access below or return to the track map.

Checking your access to this lesson…

Your path, step by step

Download activity materials

Download the lesson example and a workbook for your notes. The ZIP includes a guide to organizing activities in one or more repositories. Publishing is optional; eligible accounts can also use the GitHub upload button.

Your file for this lesson

Edit the example or record what you learned. This space does not run code or grade answers. The draft is saved only in this browser, separately per account; you choose when to download or upload to GitHub.

The example may be only a snippet or outline. Changing the extension does not make it a complete program. The activity ZIP contains starting material; the edited-file button downloads your text.

My code or notesFile format

Your text will be saved in this browser when you edit it. On a shared computer, clear your drafts when finished.

Direct upload accepts up to 8 KiB of text in one file. Use downloads and the manual guide for projects with multiple files.