A-LevelComputer ScienceProgramming FundamentalsOct/Nov 2021Paper 2 Q411 Marks
The following is a procedure design in pseudocode. Line numbers are given for reference only. 10 PROCEDURE Check(InString : STRING) 11 DECLARE Odds, Evens, Index : INTEGER 12 13 Odds ← 0 14 Evens ← 0 15 Index ← 1 16 17 WHILE Index <= LENGTH(InString) 18 IF STR_TO_NUM(MID(InString, Index, 1)) MOD 2 <> 0 THEN 19 Odds ← Odds + 1 20 ELSE 21 Evens ← Evens + 1 22 ENDIF 23 Index ← Index + 1 24 ENDWHILE 25 26 CALL Result(Odds, Evens) 27 ENDPROCEDURE
📋 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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