Programming with Karel Review

What does the mystery function do above?

• Karel puts a ball down until the end of the street

• Karel places a ball whether there is a ball present or not to the end of the Street

• Karel checks if there is a ball on the spot and if there is, places a ball to the end of the Street

• Karel checks if there is a ball on the spot and if not, places a ball

Which of the following is not a valid condition to go in a while loop for Karel?

• facingNorth()

• frontIsBlocked()

• turnAround()

• noBallsPresent()

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

• 2

• 3

• 6

• 8

What condition should be used in this while loop to get Karel to move until there is a wall in the way?

• noBallsPresent();

• ballsPresent();

• frontIsClear();

• turnLeft();

Which lines should be indented in the code above?

• 3,4,5,6

• 3,4,5,6,11

• 3,4,5,6,8

• 3,4,5

What is one way to create an abstraction in Karel coding?

• Use a while loop

• Use a for loop

• Create a function

• Use an if statement

Say you want to write a program that has Karel run to the other side of first street, jumping over all of the hurdles. Karel should only jump if there is a hurdle blocking the way. However, the hurdles can be in random locations. The world is fourteen avenues long. What is the best control structure to use?

• If statement

• While loop

• Nested while loop

• For loop

Super Karel starts at Street 2, Avenue 1, facing North in a 5 x 5 world. What will happen after this code above runs?

• Karel will end at Street 2 Avenue 3

• Karel will end at Street 3 Avenue 2

• A syntax error will occur

• Karel will run into a wall

Super Karel starts at Street 1, Avenue 3, facing West in a 5 x 5 world. What will happen after the above code runs?

• Karel will end at Street 2, Avenue 1

• Karel will run into a wall

• Karel will end at Street 1, Avenue 2

• A syntax error will occur

Which of the following problem solving strategies breaks down different parts of a function into their own functions to make the code more readable?

• Indenting code

• Debugging code

• Top Down Design

• Loops