Correcting Algorithms
Computer Science: OCR A Level, topic 8.1.2
Correcting Algorithms
As well as knowing what an algorithm does, it's important to be able to fix it if it all goes wrong.
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Incorrect identifiers
- A common mistake in programs is incorrect identifiers.
- Be very careful with uppercase and lowercase letters.
- Be careful with similar looking characters:
- 0 and O.
- 1 and l (lower case L).
Incorrect operators
- Look out for the difference between similar operators such as testing if a number is less than another, rather than less than or equal to the other.
Missing processes
- Sometimes a line of code has been forgotten, which can lead to issues such as infinite loops, where the code will never end.
Test yourself on Correcting Algorithms
Which of these characters gets most commonly confused in programming?
What is the most common operator mistake?