How to shove a compiler into a telegram bot?

Question

C++ / C#

Let's say there are 10 buttons, each adds some function to the exe file, how can you make a choice of functions, then so that the user presses "OK" and an exe file with the selected functions is sent to him?

Answer 1

The links have code examples on how to compile on the fly. How to shove methods into source codes, etc. This is a different and rather simple question.
Dynamically compile and run code using .NET Core 3.0
Here is an example from Microsoft
Cross-Platform Code Generation with Roslyn and .NE...

Answer 2

You have, say, 10 exe-shnikov with different functions. The user clicks on the button with the desired functions, and the bot sends him an exe file with the necessary functions.
This is a logic puzzle from the first grade.