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Representing algorithms

Representing algorithms

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Question 44

An algorithm uses the following record structure to store communication satellite specifications:

RECORD Satellite
    identifier : String
    constellation : String
    altitudeKm : Real
ENDRECORD

S1 ← Satellite("Aero-1", "StarLink", 550.4)
S2 ← Satellite("Nova-9", "OneWeb", 1200.2)

Write an algorithm using pseudo-code to display the identifier of the satellite orbiting at the lower altitude.

The algorithm should:

  • compare the altitude (altitudeKm) of the satellite S1 and the satellite S2
  • output the identifier (identifier) of the satellite at the lower altitude
  • output the string "Same Altitude" if the satellites are at the same altitude.

The algorithm should work for any values stored in S1 and S2.

[3]
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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