Identifiers in Programming (2 marks)
Explain why meaningful identifier names are important when programming. Provide two reasons in your answer.
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AQA (8525)
Subroutine (2 Marks)
Define a subroutine called CalculateVolume that takes two parameters, height and radius, and calculates the volume of a cylinder. The formula for volume is πr²h.
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Iteration and Selection (3 Marks)
Write a code segment using definite iteration that prints the numbers 1 to 10 in descending order, but only prints the number if it is even.
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Variable Assignment (1 Mark)
Explain the purpose of an assignment statement in a computer program.
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Variable and Constant Declaration (2 Marks)
A program needs to calculate the area of a rectangle. Write the statements required to declare a variable to store the width and a constant to hold the maximum allowed area, which is 2500.
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‘Integer’ and ‘Real’ Data Types. (4 marks)
Explain the difference between ‘integer’ and ‘real’ data types with an example of when you would use each in a program.
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Boolean Data Type. (3 marks)
Describe three different scenarios where a Boolean data type would be used in a computer program.
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The Most Suitable Data Type for Storing a Person’s Full Name and Why. (2 marks)
Which data type would be most suitable for storing a person’s full name and why?
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Appropriate Data Type for each Variable. (5 marks)
Given the following variables, identify the most appropriate data type for each: a) age b) price c) isMember d) initial e) firstName
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Explain the Term “Data Type”. (1 mark)
Explain the term “data type” in the context of computer programming.
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