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Computer Science

GCSE · AQA

QuestionsFlashcards

Cyber Security Threats
Social Engineering
- What Social Engineering Is
  4
- Blagging, Phishing & Shouldering
  5
Malware
- What Malware Is
  2
- Viruses, Trojans & Spyware
  3
Detecting & Preventing Threats

Variables, Constants & Assignment Flashcards

All 6 cards in this deck

What is a variable in programming?: A named memory location whose value can change while the program is running.
What is a constant in programming?: A named value that is set once and cannot change while the program is running.
Give one reason to use a constant instead of a variable in a program.: The value cannot be changed accidentally, and it only needs editing in one place.
What is an assignment statement?: A statement that gives a value to a variable. In AQA pseudo-code it uses ←, e.g. score ← 0.
True or false? In AQA pseudo-code, = is used to assign a value to a variable.: False. = tests whether two values are equal; ← is used for assignment, e.g. total ← 0.
How is a named constant declared in AQA pseudo-code? e.g. a constant for pi: With the keyword CONSTANT, then the name and its value: CONSTANT PI ← 3.141