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Representing algorithms

Representing algorithms

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Question 90

An algorithm has been developed to automate an irrigation system in a greenhouse based on the daily weather forecast.

1      forecast ← USERINPUT
2      IF forecast = 'overcast' THEN
3          pulses ← 2
4      ELSE IF forecast = 'warm' THEN
5          pulses ← 5
6      ELSE IF forecast = 'hot' THEN
7          pulses ← 8
8      ELSE
9          OUTPUT 'unknown weather'
10     ENDIF
11     FOR i ← 1 TO pulses
12         IF i <= 3 THEN
13             TRIGGER_MIST('fine')
14         ELSE
15             TRIGGER_MIST('heavy')
16         ENDIF
17     ENDFOR

State how many times the subroutine TRIGGER_MIST will be called with the parameter 'fine' if the user input is 'warm'.

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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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