Practice Variables And Constants (7.4) - Values and Types

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10 questions

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6 sample questions

Question 1.
Define what a variable is.
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Think about a box that can hold different items.
Question 2.
What is the main purpose of a constant?
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Consider where you would use a number that never changes, like π.
3Question 3.
What is a variable?
- A fixed value
- A storage location that can change
- A data type
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Think about the flexibility of values in a program.
4Question 4.
True or False: Constants can be changed during program execution.
- True
- False
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Reflect on the definition of constants.
Question 5.
Write a program snippet that uses both variables and constants to calculate the area of a circle, considering the radius as user input.
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Think about the formula for area = πr² and how to implement it in code.
Question 6.
Create a scenario where mistakenly changing a constant would lead to an error. Then, explain how that error could impact the program.
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Reflect on situations that involve limits, like user registrations or rates.

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