Practice Pure And Impure Functions (4.7) - Functions

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6 sample questions

Question 1.
Define a pure function in your own words.
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Think about predictability and side effects.
Question 2.
Give one example of a pure function.
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Consider a function like `int add(int a, int b) { return a + b; }`.
3Question 3.
What defines a pure function?
- It has side effects
- It always returns the same output for the same input
- It modifies global variables
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Focus on consistency of output.
4Question 4.
True or False: An impure function can change a global variable.
- True
- False
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Think about the nature of impure functions.
Question 5.
Write a programming function that checks whether a number is even or odd and explain if it is a pure or impure function.
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Consider how the function interacts with external variables.
Question 6.
Create a function that generates a random number. Determine if it's pure or impure, and explain your reasoning.
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Reflect on the consistency of output regarding inputs.

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