Exam Tips

Part of Variables & Constants · Section 6 of 7

Study NotesUnit: 3.2 ProgrammingGCSE

This study notes covers Exam Tips within Variables & Constants for GCSE Computer Science. Revise Variables & Constants in 3.2 Programming for GCSE Computer Science with 17 exam-style questions and 10 flashcards. This topic appears less often, but it can still be a useful differentiator on mixed-topic papers. It is section 6 of 7 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.

Exam Tips

  • When to use each: Variable for things that change, constant for fixed values
  • Common mistake: Using a variable when a constant is more appropriate

Practice questions for Variables & Constants

Which of the following best describes a variable in a program?

  • A. A named memory location whose value can be changed during execution
  • B. A named memory location whose value cannot be changed once set
  • C. A value that is hard-coded directly into the program instructions
  • D. A fixed mathematical value such as pi or the speed of light
1 markfoundation

Explain three reasons why using named constants is considered good programming practice.

3 marksstandard

Quick recall flashcards

What is a constant?
Named storage location whose value cannot change
What is a variable?
Named storage location whose value can change

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