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Cambridge IGCSE Computer Science practice

Paper 2 structured question: P rogramming concepts

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P rogramming concepts

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Paper 2Algorithms, Programming and Logic2 marks

Declaring variables and constants in programming.

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Variable and Constant Example

Consider the following declarations: 'int score = 100;' and 'const int MAX_SCORE = 1000;'.

  1. a

    Explain the difference between 'score' and 'MAX_SCORE'.

    Aim for approximately 2 distinct marking points.

    [2]

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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]