3.2 ProgrammingStudy Notes

Deep Dive: Scope Example

Part of Variable Scope · GCSE GCSE Computer Science revision

This study notes covers Deep Dive: Scope Example within Variable Scope for GCSE Computer Science. Revise Variable Scope in 3.2 Programming for GCSE Computer Science with 18 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 4 of 7 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 4 of 7

Practice

18 questions

Recall

10 flashcards

Deep Dive: Scope Example

global score = 0  // Global - accessible everywhere

function addPoints(points)
    local bonus = 10  // Local - only in this function
    score = score + points + bonus
endfunction

addPoints(5)
print(score)  // Works - score is global
print(bonus)  // ERROR - bonus doesn't exist here

Keep building this topic

Read this section alongside the surrounding pages in Variable Scope. That gives you the full topic sequence instead of a single isolated revision point.

Local vs Global Memory Trick Video Lesson Where Variables Live

Practice Questions for Variable Scope

Where can a local variable be accessed?

A. Anywhere in the program
B. Only within the subprogram where it is declared
C. Only in the main program body
D. In any subprogram that calls the original subprogram

1 markfoundation

Identify and explain the scope error in this pseudocode: function calculateTotal(price, quantity) local total = price * quantity endfunction calculateTotal(10, 5) output total

2 marksstandard

Quick Recall Flashcards

What is a global variable?

A variable declared outside all subprograms, accessible anywhere in the program

What is variable scope?

Where a variable can be accessed in the code

18 questions on Variable Scope — practise free

Instant marking, adaptive difficulty, and 10 spaced repetition flashcards. Free until your GCSEs.

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Local vs Global

Memory Trick