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A-LevelComputer ScienceObject-Oriented ProgrammingMay/June 2024Paper 4 Q231 Marks

A computer program will store data about trees. The user can enter their requirements for a tree and a suitable tree will be selected. The program is written using object-oriented programming. The class Tree stores data about the trees. Tree TreeName : STRING stores the name of the tree HeightGrowth : INTEGER stores the number of cm the tree will grow each year MaxHeight : INTEGER stores the maximum height in cm that the tree will grow MaxWidth : INTEGER stores the maximum width in cm that the tree will grow Evergreen : STRING stores whether the tree keeps its leaves as "Yes", or loses its leaves as "No" Constructor() initialises TreeName, HeightGrowth, MaxHeight, MaxWidth and Evergreen to its parameter values GetTreeName() returns the name of the tree GetGrowth() returns the number of cm the tree will grow each year GetMaxHeight() returns the maximum height in cm that the tree will grow GetMaxWidth() returns the maximum width in cm that the tree will grow GetEvergreen() returns whether the tree keeps its leaves or loses its leaves

📋 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 in A-Level Computer Science (syllabus code 9618). It is worth 31 marks.

Source

This question appeared in the Cambridge A-Level Computer Science May/June 2024 examination, Paper 4 Variant 1.

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