Karel Programming Quiz

Which of the following is the correct way to define a turn_right function in Karel?

• def turn_right(): turn_left() turn_left() turn_left()

• def turn_right(): turn_right() turn_right() turn_right()

• def turn_right(): turn_left() turn_left() turn_left()

• function turn_right(): turn_left() turn_left() turn_left()

How can we improve the following program? move() move() move() move() move() move() move() move() move() move()

• Break down this program into more functions

• Use a for loop to repeat the move command

• Use a while loop to repeat the move command

• Fix the indentation of this program

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) move() turn_left() put_ball() turn_left() turn_left() turn_left() move() turn_left()

• Street 3, Avenue 1, Facing North

• Street 1, Avenue 4, Facing North

• Street 1, Avenue 3, Facing South

• Street 1, Avenue 3, Facing North

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

• To do something if a condition is true

• To do something while a condition is true

• To repeat something a fixed number of times

• To make programs run faster

What is wrong with this for loop? for i in range = 5; move()

• A. The for loop uses a semicolon(;) instead of colon(:)

• B. It should say range(5) instead of range = 5

How can we teach Karel new commands?

• For loop

• While loop

• Define a new function

• The main function

Karel starts at Street 1 and Avenue 1, facing East. After calling the stair_step 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

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? for i in range(3): if balls_present(): take_ball() else: put_ball() put_ball()

• 0

• 1

• 2

• 6

Why do we use functions in Karel programs?

• Break down our program into smaller parts

• Avoid repeating code

• Make our program more readable

• All of the above

What does the mystery function do? def mystery(): while no_balls_present(): move()

• Moves until a ball is present

• Moves indefinitely

• Stops immediately

• Moves only once