Variable Scope Practice Quiz¶

Question 1¶

variable-scope-quiz1: What would be the result of the following code?

function setup() {
  createCanvas(400, 400);
  let x = 50;
}

function draw() {
  background("black");
  fill("white");
  rect(x, 50, 25, 25);
}

ReferenceError: x is not defined
Yes! Nicely done!
A white rectangle is drawn on a black background at coordinates (50, 50), and with width and height of 25.
Try again!
None of these options
Try again!
A black rectangle is drawn on a white background at coordinates (50, 50), and with width and height of 25.
Try again!

Question 2¶

variable-scope-quiz2: What would be the result of the following code?

let x = 50;

function setup() {
  createCanvas(400, 400);
}

function draw() {
  background("black");
  fill("white");
  rect(x, 50, 25, 25);
}

A white rectangle is drawn on a black background at coordinates (50, 50), and with width and height of 25.
Yes! Nicely done!
ReferenceError: x is not defined
Try again!
None of these options
Try again!
A black rectangle is drawn on a white background at coordinates (50, 50), and with width and height of 25.
Try again!

Question 3¶

variable-scope-quiz3: What would be the result of the following code?

let x = 50;

function setup() {
  createCanvas(400, 400);
}

function draw() {
  background("black");
  fill("white");
  rect(x, 50, 25, 25);
  x++;
}

A white rectangle is drawn on a black background at coordinates (50, 50), and with width and height of 25. Each frame, the rectangle moves slightly to the right.
Yes! Nicely done!
A white rectangle is drawn on a black background at coordinates (50, 50), and with width and height of 25. Each frame, the rectangle moves slightly to the left.
Try again!
A white rectangle is drawn on a black background at coordinates (50, 50), and with width and height of 25.
Try again!
ReferenceError: x is not defined
Try again!
None of these options
Try again!

Question 4¶

variable-scope-quiz4: What would be the result of the following code?

function setup() {
  createCanvas(400, 400);
}

function draw() {
  let x = 50;
  background("black");
  fill("white");
  rect(x, 50, 25, 25);
  x++;
}

A white rectangle is drawn on a black background at coordinates (50, 50), and with width and height of 25.
Yes! Nicely done!
A white rectangle is drawn on a black background at coordinates (50, 50), and with width and height of 25. Each frame, the rectangle moves slightly to the left.
Try again!
A white rectangle is drawn on a black background at coordinates (50, 50), and with width and height of 25. Each frame, the rectangle moves slightly to the right.
Try again!
ReferenceError: x is not defined
Try again!
None of these options
Try again!

Next Section - Loops Practice Quiz