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A-LevelComputer ScienceObject-Oriented Programming (OOP)Oct/Nov 2022Paper 4 Q231 Marks

A computer program is being developed that uses a set of cards. The program is written using object-oriented programming. The program has two classes: Card and Hand. The methods and attributes of these classes are shown: Card Number: INTEGER stores the card number from 1 to 5 inclusive Colour : STRING stores the card colour: red, blue or yellow Constructor() takes a number and colour as parameters and sets the private values to these parameters GetNumber() returns the card number GetColour() returns the card colour Hand Cards : ARRAY[0:9] OF Card 1D array of type Card FirstCard : INTEGER stores the position of the first card in the hand NumberCards : INTEGER stores the number of cards in the hand Constructor() takes five card objects as parameters, assigns each card to the array Cards[], initialises FirstCard to 0 and NumberCards to 5 GetCard() takes an index as a parameter and returns the card at that index in the array

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Computer Science Question

Topic

This structured question tests Object-Oriented Programming (OOP) in A-Level Computer Science (syllabus code 9618). It is worth 31 marks.

Source

This question appeared in the Cambridge A-Level Computer Science Oct/Nov 2022 examination, Paper 4 Variant 1.

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