Karel Programming Flashcard (45 minutes)

Front

Which of the following is a valid Karel conditional? is_front_clear(), front_is_clear(), clear_is_front(), is_clear_front()

Back

is_front_clear()

Front

What will happen if the code below is executed when Karel is facing a wall? Options: Karel will move forward, Karel will turn left, Karel will not move, Karel will crash into the wall

Back

Karel will not move

Front

What is the purpose of conditionals in programming?

Back

To check if certain conditions are true before executing code

Front

What is the correct syntax for an if-else statement in Karel? Options: A. if (condition) {code} else {code}, B. if condition then code else code, C. if condition: code else: code, D. if condition:
code else:
code

Back

if condition:
code else:
code

Front

Which of the following conditionals would check if Karel is NOT facing north? Options: not_facing_north(), facing_north() == False, !facing_north(), Both B and C are correct

Back

not_facing_north()

Front

How many times will the following loop execute?
for i in range(5):
move()

Back

5 times

Front

What is the key difference between a for loop and a while loop?

Back

For loops repeat a fixed number of times, while loops repeat as long as a condition is true.

Front

What will the following code do?
while front_is_clear():
move()

Back

Move Karel forward until reaching a wall

Front

What would be the correct way to make Karel place exactly 10 balls? Options: for i in range(10): put_ball(), while i < 10: put_ball(), for i in range(9): put_ball(), repeat(10): put_ball()

Back

for i in range(10): put_ball()

Front

Which of the following is NOT mentioned as a common source of bugs?
Typos in variable names, Computer hardware failures, Syntax errors in functions, Valid code that isn't what you meant

Back

Computer hardware failures