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Learn Challenge: Understanding Variable Scopes | Introduction
C++ Functions

bookChallenge: Understanding Variable Scopes

Task

Swipe to start coding

You are building a simple tax calculator. Each user has a salary, and you want to calculate the amount of tax they need to pay based on a fixed tax rate.

  1. Declare the function calculateTax that returns a double.
  2. Add a parameter to the function with type double named salary.
  3. Calculate the tax by multiplying salary by taxRate. Use double taxRate = 0.18 as the fixed rate.
  4. Return the calculated tax from the function.

Do not modify the value of taxRate inside the calculateTax function.

Example

calculateTax(2500.0) β†’ 450.0
calculateTax(1000.0) β†’ 180.0
calculateTax(0) β†’ 0.0

Solution

solution.cpp

solution.cpp

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SectionΒ 1. ChapterΒ 5
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bookChallenge: Understanding Variable Scopes

Swipe to show menu

Task

Swipe to start coding

You are building a simple tax calculator. Each user has a salary, and you want to calculate the amount of tax they need to pay based on a fixed tax rate.

  1. Declare the function calculateTax that returns a double.
  2. Add a parameter to the function with type double named salary.
  3. Calculate the tax by multiplying salary by taxRate. Use double taxRate = 0.18 as the fixed rate.
  4. Return the calculated tax from the function.

Do not modify the value of taxRate inside the calculateTax function.

Example

calculateTax(2500.0) β†’ 450.0
calculateTax(1000.0) β†’ 180.0
calculateTax(0) β†’ 0.0

Solution

solution.cpp

solution.cpp

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Everything was clear?

How can we improve it?

Thanks for your feedback!

SectionΒ 1. ChapterΒ 5
single

single

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