Adv CS- Javascript- Programming with Karel

Which of the following commands is a valid Karel command?

• move

• move;

• move();

• move()

Why do we use functions in Karel programs?

• Make our program more readable

• Avoid repeating code

• Break down our program into smaller parts

• All of the above

What is wrong with this for loop?

for (let i = 0, i < 10, i + 1) {

move();

}

I. The for loop uses commas instead of semicolons

II. It should say i++ instead of i + 1

• I

• II

• I and II

• The for loop is correct

What is the proper format for a single line comment in Karel?

• # This is a comment

• /* This is a comment

• // This is a comment

• <comment>This is a comment</comment>

Which of the following is not a valid condition to go in an if statement for Karel?

• leftIsBlocked()

• turnLeft()

• frontIsClear()

• ballsPresent()

What condition should be used in this while loop to get Karel to pick up all the tennis balls on the current location?

while (________) {

takeBall();

}

• noBallsPresent()

• ballsPresent()

• frontIsClear()

• takeBall()

How can we teach Karel new commands?

• Define a new function

• While loop

• The main function

• For loop

Karel starts at Row 1, Column 1, facing East in a 5x5 world. What will happen after this code runs? Assume this is a SuperKarel program.

move();

move();

turnRight();

move();

• This code won’t run because of a syntax error

• Karel ends on Row 2, Column 3

• Karel will crash into a wall

• Karel ends on Row 1, Column 3

What is top down design?

• Top down design is a way of designing your programs starting with the individual commands first

• Top down design is a way to use loops and if statements to decompose the problem

• Top down design is a way of designing your program by starting with the biggest problem and breaking it down into smaller and smaller pieces that are easier to solve.

• Top down design is a way that you can create designs on a computer to put on a web page

What is the purpose of using a for loop in code?

• To make programs run faster

• To do something while a condition is true

• To repeat something a fixed number of times

• To do something if a condition is true