A-LevelComputer ScienceData StructuresMay/June 2024Paper 2 Q39 Marks
A record structure is declared to hold data relating to components being produced in a factory: TYPE Component DECLARE Item ID : STRING DECLARE Reject : BOOLEAN DECLARE Weight : REAL ENDTYPE The factory normally produces a batch (or set) of 1000 components at a time. A global array is declared to store 1000 records for a batch: DECLARE Batch : ARRAY [1:1000] OF Component Two global variables contain the minimum and maximum acceptable weight for each component. The values represent an inclusive range and are declared as: DECLARE Min, Max : REAL
📋 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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