6. Loops: Doing Things Over and Over

Learn Loops: Doing Things Over and Over through beginner-friendly explanations, working GOCO examples, and their expected output.

6.1 Basic Loop

Loops are a great way to repeat yourself without writing the same line twice. A simple Loop will keep going as long as its rule is True.

goco

Number count = 0.
Loop (count < 3) {
    Displaynl(count).
    count = count + 1.
}

You can write all loop instructions in a single line using Till. You give it a start, a rule to end, and a way to climb up.

goco

Loop (Number step = 0 Till step < 3, step++) {
    Displaynl("Walking step: " + step).
}

You can jump out of a loop at any time using Break. If you want to skip the current step but keep looping, use Continue.

goco

Loop (Number i = 1 Till i < 5, i++) {
    If (i == 2) {
        Continue.
    }
    If (i == 4) {
        Break.
    }
    Displaynl(i).
}