O-LevelComputer ScienceAlgorithm design and problem-solving2210/23 · Oct/Nov 2024 · Q94 Marks
A flowchart checks that values stored in three variables are identical. If they are different, the highest value is stored in all three variables. [Flowchart diagram] Identify four errors in the flowchart and suggest a correction for each error. You may label each error on the diagram with the corresponding error number. Error 1 Correction Error 2 Correction Error 3 Correction Error 4 Correction
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Mark scheme
Marking points from the official mark scheme (Oct/Nov 2024). The mark or mark type is shown in brackets.
- One mark for each error identified and correction
- first decision box flow line labels Yes should be No and vice versa
- second decision box OR should be AND
- Flow line from A to B should be should A← B
- Flowchart symbol for A ← C should be a process box / rectangle
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