A marine research buoy records water salinity levels (in practical salinity units, PSU) over a 6-hour period into an array of 6 elements. A trainee programmer has written a section of pseudocode to find the minimum salinity level recorded.
1 salinity = [35.2, 34.8, 35.5, 33.9, 34.1, 35.0]
2 minimum = salinity
3 k = 1
4 WHILE k <= 6
5 IF salinity[k] < minimum THEN
6 minimum = salinity
7 ENDIF
8 k = k + 1
9 ENDWHILE
10 OUTPUT "Minimum: " + minimum
Line 4 and Line 6 cause errors.
Identify the error in each line and construct new lines of pseudocode that will correct the errors.
| Line Number | Error | Correction |
|---|---|---|
| Line 4 | ||
| Line 6 |
159 exam-style questions on Edexcel GCSE Computer Science Algorithms, covering Constructs for solving problems, Variables, constants and data structures, Arithmetic, relational and logical operators, Tracing algorithm output with trace tables, Types of error and correcting logic errors, Standard algorithms (sorts and searches), and Evaluating algorithm fitness and efficiency. Each one has a worked solution and a mark scheme showing where the marks go.