Sherpa

Existing user?

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

Local Variables Flashcards

All 3 cards in this deck

What is a local variable?: A variable declared inside a subroutine. It usually only exists while the subroutine is executing and can only be accessed within that subroutine.
True or false? A variable declared inside a subroutine can still be used in the main program after the subroutine ends.: False. It is a local variable, so it only exists while the subroutine is executing.
Why is it good practice to use local variables in subroutines?: Any two of: changes inside the subroutine can't accidentally affect variables elsewhere; the same name can be reused in other subroutines; the subroutine is self-contained, so it is easier to test and reuse; its memory is freed when it ends.