[REQUEST] Add [Euler totient Function - Number Theory] in [CPP]

[raj-mistry-01]

Algorithm Name

Euler totient Function

Programming Language

C++

Category

Mathematical Algorithms

Difficulty Level

Hard (Advanced)

Algorithm Description

ETF

References (Optional)

https://cp-algorithms.com/algebra/phi-function.html

Contribution Intent

• I would like to implement this algorithm myself
• I'm requesting this for someone else to implement
• I need help implementing this algorithm

Code of Conduct

• I agree to follow this project's Code of Conduct