Karel Commands 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

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

• function turnRight() { turnLeft(); turnLeft(); turnLeft(); }

• function turnRight() { turnRight(); turnRight(); turnRight(); }

• function turnRight { turnLeft();

  turnLeft();

  turnLeft(); }

• turnRight function() {

  turnLeft();

  turnLeft();

  turnLeft();

  }

Why do we use functions in Karel programs?

• A. Break down our program into smaller parts

• B. Avoid repeating code

• C. Make our program more readable

• D. All of the above

Karel starts at Row 1 and Column 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 (karel knows how to turn right) program and the world is 10x10 in size)

• A

  Row 2, Column 2, Facing North

• B.

  Row 3, Column 3, Facing East

• C.

  Row 3, Column 3, Facing West

• D.

  Row 4, Column 4, Facing East

If Karel starts at Row 1 and Column 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)

• 1. Row 3, Column 1, Facing North

• 1. Row 1, Column 4, Facing North

• 1. Row 1, Column 3, Facing South

• 1. Row 1, Column 3, Facing North

In this code, how many times is the dance function called and how many times is it defined?

• Called 1 time, defined 1 time

• Called 1 time, defined 3 times

• Called 3 times, defined 1 time

• Called 3 times, defined 3 times

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

This code:

putBall();

move();

putBall();

puts 2 balls in the same place and then moves one place?

• True

• False

Karel only knows 4 commands.

• True
• False