Where can I find practice problems in C++?

Question

C++ / C#

(As always, a preface)
I’m sitting like this, leafing through the Toaster. I’m looking at the question about tasks by pluses. I read it, grinned, and then thought. I started looking for puzzles. Strangely enough, I did not find them.
So. Where do sites with good practical tasks live? I want and drown in Gamedev, so it’s desirable to have tasks related somehow to this topic. Oh yes. C ++ language

Answer 1

codingame
hackerrank
codewars
or even better just start writing :)

Answer 2

Yes, why not take and start some game project on your own?