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A-LevelComputer ScienceError Handling and Data ValidationOct/Nov 2024Paper 2 Q410 Marks

A program includes the following assignment statement: Result ← STR_TO_NUM(x) / STR_TO_NUM(y) When the program evaluates the expression in the statement, it performs a calculation. Variable Result is of type real and variables x and y are of type string. Two checks are required before the calculation is performed: 1. The two strings represent valid numeric values. 2. The numeric value of string y is not zero.

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The correct answer is . This question tests the candidate's understanding of error handling and data validation within the Computer Sciencesyllabus. The examiner's mark scheme requires...

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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...

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About This A-Level Computer Science Question

This structured question appeared in the Cambridge A-Level Computer Science (9618) Oct/Nov 2024 examination, Paper 2 Variant 1. It tests the topic of Error Handling and Data Validation and is worth 10 marks.

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