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Representing algorithms

Representing algorithms

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Question 96

An algorithm used to control an automated agricultural chemical dispenser is shown in Figure 1.

Figure 1

constant BASE_DOSAGE ← 450
constant BUFFER_VOLUME ← 75
OUTPUT 'Enter total solution volume in reservoir (mL)'
reservoir ← USERINPUT
doseSize ← BASE_DOSAGE + BUFFER_VOLUME
dispensedCount ← 0
REPEAT
    reservoir ← reservoir - doseSize
    dispensedCount ← dispensedCount + 1
UNTIL reservoir < doseSize

State why both BASE_DOSAGE and BUFFER_VOLUME do not need to be included in a trace table for this algorithm.

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Markscheme

Representing algorithms Questions

  1. GCSE
  2. /Computer Science
  3. /Representing algorithms

208 exam-style questions on AQA GCSE Computer Science Representing algorithms. Each one has a worked solution and a mark scheme showing where the marks go.

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