I have been learning to code in C++ since September of last year and this is my most advanced project so far. It’s the game of checkers played in the console. It was written using the Clion IDE. What would my code be more professional and readable? What would make it more efficient? I was also thinking of learning to do graphics with C++ so I could take this project further.

Here is the Git for the code.
Git link

I would also appreciate any recommendations for my next project that would widen my skillset in C++.