Mini projects

Small programs that use ideas from the Learn path. Do not jump ahead to advanced features just to finish these.

Run with the Playground or elang yourfile.echo.

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Project 1 — Personalized greeting (Playground-friendly)

Goal: Ask for a name, then greet that person.

You will need ask (reads one line of typed text) from Lesson 1 skills plus Lesson 2 variables.

name: str = ask("What is your name? ");
say("Hello,", name);

Try: Run it, type a name, press Enter.

Expected shape (when you type interactively):

What is your name? Ada
Hello, Ada

(If input is piped in without echoing, the greeting may appear on the same line as the prompt. That is normal for non-interactive runs.)

Stretch: Greet using interpolation: say("Hello, ${name}!");

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Project 2 — Number quiz

Goal: Store a secret number. Ask the player for a guess (ask returns text). Convert with asInt and say whether the guess is too low, too high, or correct.

Hints:

• guess_text: str = ask("Guess: ");
• guess: int = asInt(guess_text);
• Use if / else if / else from Lesson 3.

One solution

secret: int = 7;
guess_text: str = ask("Guess: ");
guess: int = asInt(guess_text);

if guess < secret {
    say("Too low");
} else if guess > secret {
    say("Too high");
} else {
    say("Correct");
}

TIP

asInt stops with an error if the text is not a whole number. That is OK for this project. Safer variants like asIntOr are covered later in reference material.

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Project 3 — Shopping list

Goal: Make a list of three items (text). Print each item with a while loop and length(), then push a fourth item and print the list.

One solution

items: list = ["milk", "eggs", "bread"];
i: int = 0;

while i < items.length() {
    say(items[i]);
    i = i + 1;
}

items.push("butter");
say(items);

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Project 4 — Two-file adder (local install)

Goal: Split a tiny program across two files like Lesson 8.

1. math.echo exports add.
2. app.echo imports it and prints add(6, 7).
3. Run elang app.echo from that folder.

Expected output:

13

This project needs the installed CLI (not the single-file playground).

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After the projects

• Review Common mistakes
• Browse Language Reference when you need exact rules
• Explore Advanced when you are ready