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Learning objective

Declare and utilize variables and constants in programming.

Read the explanation, check the common trap, then practise with flashcards and questions.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE Computer ScienceProgramming

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Quick explanation

Declare and utilize variables and constants in programming

  • This point belongs to P rogramming concepts, especially P rogramming concepts outcomes.
  • You need to be able to declare and utilize variables and constants in programming.
  • The key ideas to know are Define and Use.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DefineUse

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This objective helps connect P rogramming concepts outcomes to exam-style questions, flashcards, and revision notes for P rogramming concepts.

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Paper 2 structured question: P rogramming concepts

Paper 2Algorithms, Programming and Logic1 marks

Description

Variable and Constant Declaration

In programming, variables are used to store data that can change, while constants are used for fixed values. For example, in Python, a variable can be declared as 'age = 25' and a constant can be declared as 'PI = 3.14'.

  1. a

    State What is the purpose of using constants in programming?

    Aim for approximately 1 distinct marking point.

    [1]
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