What task would you give to a C# programmer candidate?

Question

Programming

The question is purely for general development, I believe that I know this language quite well, because. I haven’t met a real task yet, which I couldn’t solve, but I can’t imagine how to define it more precisely, so the question arose, what task is given for applicants to test their skills?

Answer 1

common in any language: recursion or queues using pointers.
it is possible to ask to make still "calculator" with use of OOP.

Answer 2

Real, I noticed a long time ago that giving real tasks from work is cool, firstly, you evaluate the candidate’s abilities very correctly, and secondly, the work is often done.

Answer 3

Calculation of function values ​​y=1/x.