Variables and Data Types Archives

Local and Global Variables (2 marks)

Explain the difference between local and global variables. Provide an example of each using pseudocode.

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Mathematical Operations and Counts (5 marks)

Design an algorithm in pseudocode that calculates the factorial of a given non-negative integer n using iteration. The factorial (symbol: !) of a number is the product of all positive integers less than or equal to the number. For example, 5!=5×4×3×2×1=120.

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Boolean Data Type (2 marks)

By admin

What value would the Boolean variable isEven hold if it stores the result of the expression (10 mod 2) == 0? Explain your answer.

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Conversion Between Data Types (4 marks)

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Consider the following pseudo-code segment: var ageAsString = “25” var age = INTEGER(ageAsString) a) What is the data type conversion that is taking place here? (1 mark) b) Explain why this type of conversion might be necessary in a computer program. (3 marks)

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Practical Application of Data Types (2 marks)

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Which data type would be most appropriate for the following variables? State the data type and give a reason for your choice: a) temperature (1 mark) b) isStudent (1 mark)

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