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AQA · GCSE · Computer Science · Higher

Rest been defined as a constant

Q02.2 1 mark

Explain why rest could have been defined as a constant in the algorithm shown in Figure 1.

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Marking points

  1. 1 Explains that rest remains unchanged after initialization.

Full-mark answer

rest could be a constant because its value is set once and does not change while the algorithm runs.

Why this answer loses marks

It is assigned near the start of the algorithm.

A starting assignment alone is not enough; the reason is that the value is not changed afterwards.