AP CSP Standard 1 Review

Which of the following cannot be used as a valid condition in an if statement for Karel?

• ballsPresent()

• frontIsClear()

• leftIsBlocked()

• putBall()

Karel starts at a location with one tennis ball. Consider the following code:

for (var i = 0; i < 3; i++) {
if (ballsPresent()) {
takeBall();

} else {

putBall();

putBall();

}

}

After the loop completes, how many tennis balls will be at Karel's starting location?

• 0

• 1

• 2

• 6

Karel starts at Street 2, Avenue 1, facing East in a 5x5 world. Carefully observe the sequence of commands below:

move();
putBall();
move();
move();
move();

move();

move();

After executing all the commands, where will Karel end up, or what will happen?

• Karel will end on Street 1, Avenue 2

• Karel will end on Street 1, Avenue 7

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

• Karel will crash into a wall

Which condition should be placed in the while loop so that Karel continues picking up tennis balls until there are none left at the current location?

while (________) {

takeBall();

• noBallsPresent()

• ballsPresent()

• frontIsClear()

• takeBall()

What are the main reasons programmers indent their code?

• Easier for other people to understand.

• A key part of good programming style!

• Helps show the structure of the code.

• All of the above

What is the correct way to teach Karel new commands so it can perform custom tasks?

• Define a new function

• While loop

• For loop

• The Start function

Karel needs to place exactly 300 tennis balls in a row. Which programming control structure would be most efficient and appropriate for this task?

• Nested while loop

• For loop

• While loop

• If Statement

Super Karel starts at Street 1, Avenue 1, facing East in a 5x5 world. Carefully consider the following sequence of commands:

move();

move();

turnRight();

move();

After executing these commands, where will Karel be, or what will happen?

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

• Karel ends on street 1, avenue 3

• Karel ends on street 2, avenue 3

• Karel will crash into a wall

Consider the following program:

function start() {

move();

move();

move();

move();

move();

move();

move();

move();

move();
}

Which of the following approaches would best improve the efficiency and readability of this code?

• Fix the indentation of this program

• Use a while loop to repeat the move command

• Use a for loop to repeat the move command

• Break down this program into more functions

Which of the following best describes the concept of top down design in programming?

• Top down design is a method that uses loops and if statements to break down a problem.

• Top down design involves starting with individual commands when designing your programs.

• Top down design refers to creating computer designs for web pages.

• Top down design is an approach where you begin with the overall problem and systematically divide it into smaller, more manageable parts.