1.21.1 Introduction to Programming 2025/2026 Exam Questions Marking Scheme New Update | A+ Rated

1.21.1 Introduction to Programming
2025/2026 Exam Questions Marking
Scheme New Update | A+ Rated



What does the mystery function do?

function mystery() { while (noBallsPresent()) { move(); } }

JavaScript




Karel moves until it is on a ball

If there is no ball present, Karel will move one time and stop.

Karel moves until it puts down a ball

Karel checks if there is no ball on the current spot and then moves once - 🧠

ANSWER ✔✔Karel moves until it is on a ball


Question: 2




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,Which of the following is not a valid condition to go in an if statement for

Karel?




ballsPresent()

frontIsClear()

leftIsBlocked()


turnLeft() - 🧠 ANSWER ✔✔turnLeft()


Question: 3




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 (var i = 0; i < 3; i++) { if (ballsPresent()) { takeBall(); } else { putBall();

putBall(); } }

JavaScript




0

1

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, 2


6 - 🧠 ANSWER ✔✔1


Question: 4




What condition should be used in this while loop to get Karel to pick up all

the tennis balls on the current location?

while (________) { takeBall(); }

JavaScript




noBallsPresent()

ballsPresent()

frontIsClear()


takeBall() - 🧠 ANSWER ✔✔ballsPresent()


Question: 5




Why does a programmer indent their code?



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STATEMENT. ALL RIGHTS RESERVED