function start() {
    var a = Randomizer.nextInt(1,100);
    println("Guess 1 - 100");

    while(true) {
        var b = readInt("Whats ur guess?");
        if(b == a) {
            println("Ur guess is correct.");
        } else if(b > a) {
            println("lower.");
        } else {
            println("higher.");
        }
    }
}

-----------

var NUM_CIRCLES = 30;
var BIG_RADIUS = 150;

function start()
{
    // Calculate constant values:
    var xPos = getWidth()/2;
    var height = getHeight();
    var increment = BIG_RADIUS / NUM_CIRCLES;

    // Draw circles:
    for (var i = NUM_CIRCLES - 1; i > 0; i--)
    {
        var circle = new Circle(i * increment);
        circle.setColor(Randomizer.nextColor());
        circle.setPosition(xPos, height - circle.getRadius());
        add(circle);
    }
}

--------

var STARTING_SIZE = getWidth();
var MIN_SIZE = 5;

function start()
{
    // Calculate initial values:
    var width = STARTING_SIZE;
    var cx = getWidth() / 2;
    var cy = getHeight() / 2;

    // Draw the structure:
    while (width >= MIN_SIZE)
    {
        // Draw rectangle:
        var rect = new Rectangle(width, width);
        rect.setColor(Randomizer.nextColor());
        rect.setPosition(cx - width/2, cy - width/2);
        add(rect);

        // Draw circle inside rectangle:
        var circle = new Circle(width/2);
        circle.setColor(Randomizer.nextColor());
        circle.setPosition(cx, cy);
        add(circle);

        // Adjust the width for the next pair:
        width /= Math.sqrt(2);
    }
}

---

var cakeWidth = 300;
var cakeHeight = 200;

var plateWidth = cakeWidth + 50;
var plateHeight = plateWidth/10;

var frostingDropRadius = cakeWidth/24;

var candleHeight = cakeHeight/3;
var candleWidth = candleHeight/8;
var candleWickHeight = candleWidth;
var candleWickWidth = candleWidth/4;

function start() {

    var cake = new Rectangle(cakeWidth, cakeHeight);
    cake.setColor(Color.ORANGE);
    cake.setPosition(getWidth()/2 - cakeWidth/2, getHeight()/2 - cakeHeight/2);
    add(cake);

    var plate = new Rectangle(plateWidth, plateHeight);
    plate.setColor(Color.BLUE);
    plate.setPosition(getWidth()/2 - plateWidth/2, getHeight()/2 + cakeHeight/2);
    add(plate);

    var numCandles = readInt("How old are you? ");

    for(var i = 1; i < numCandles + 1; i ++) {
        var candle = new Rectangle(candleWidth, candleHeight);
        candle.setColor(Color.RED);

        if (i % 2 == 0) {
            candle.setPosition(getWidth()/2-candleWidth*i, cake.getY()-candleHeight);
        } else {
            candle.setPosition(getWidth()/2+candleWidth*i, cake.getY()-candleHeight);
        }
        add(candle);
    }

    for(var i = 0; i < 26; i += 2) {
        var frosting = new Circle(frostingDropRadius);
        frosting.setColor(Color.PURPLE);
        frosting.setPosition(cake.getX() + frostingDropRadius*i, cake.getY() + cakeHeight);
        add(frosting);
    }

    for(var i = 0; i < 26; i += 2) {
        var frosting = new Circle(frostingDropRadius);
        frosting.setColor(Color.PURPLE);
        frosting.setPosition(cake.getX() + frostingDropRadius*i, cake.getY());
        add(frosting);
    }

    var text = new Text("Happy Birthday!", "30pt Arial");
    text.setPosition(getWidth()/2 - text.getWidth()/2, getHeight()/2 + text.getHeight()/2);
    text.setColor(Color.RED);
    add(text);

}