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Computational thinking

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Question 75

An automated weather buoy logs sea surface temperatures at regular intervals. The system uses an algorithm to calculate the temperature gradients between consecutive readings.

The pseudocode for this procedure is shown below.

1 PROCEDURE calculateTemperatureGradient()
2 BEGIN PROCEDURE
3     SET gradients TO []
4     FOR i FROM 0 TO LENGTH(tempReadings) DO
5         SET diff TO tempReadings[i + 1] - tempReadings[i]
6         APPEND diff TO gradients
7     END FOR
8 END PROCEDURE

The algorithm compiles successfully, but crashes due to an error on line 5 when it is executed.

Name this type of error.

[1]
Markscheme

Computational thinking Questions

  1. GCSE
  2. /Computer Science
  3. /Computational thinking

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