Programming with Karel Quiz

Which of the following commands is a valid Karel command?

• move

• move;

• move()

• move()

Why is the following command an invalid Karel command? turnleft();

• It should end in a colon rather than a semicolon

• The l should be a capital L

• It should start with a capital T

• This command is correct

If Karel starts at Street 1 and Avenue 1, facing East, where will Karel be, and what direction will Karel be facing after running the following code? (Assume the world is 10x10 in size)

• Street 1, Avenue 2, facing East

• Street 2, Avenue 1, facing North

• Street 1, Avenue 1, facing West

• Street 2, Avenue 2, facing South

Given the following code: move(); turnLeft(); putBall(); turnLeft(); turnLeft(); turnLeft(); move(); turnLeft(); Where will Karel be and what direction will Karel be facing?

• Street 3, Avenue 1, Facing North

• Street 1, Avenue 4, Facing North

• Street 1, Avenue 3, Facing South

• Street 1, Avenue 3, Facing North

Karel starts at Street 1 and Avenue 1, facing East. After calling the stairStep function twice, where will Karel be and what direction will Karel be facing? (assume this is a SuperKarel program and the world is 10x10 in size)

• Street 2, Avenue 2, Facing North

• Street 3, Avenue 3, Facing East

• Street 3, Avenue 3, Facing West

What’s wrong with this code?

• The go function is called twice

• The go function has a syntax error

• The go function has been defined twice

• go is not a command that Karel understands

How many total times will Karel move in this program?

• 1

• 0

• 2

• 3

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

• // This is a comment

• /* This is a comment

• This is a comment

Say Karel is on a location with one tennis ball. After the following code runs, how many tennis balls will there be at that location?

• 0

• 1

• 2

• 6

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

• ballsPresent()

• noBallsPresent()

• frontIsClear()

• leftIsBlocked()