Which language will be good to learn after c++?

Answer 1

Possibly, C# or Swift

If you learned C++, you should continue learn with C#.

C# is heaven of Unity. It is the main code for game development!

Swift is the combination of Objective C and C++, so swift is might be easy for you to study. Especially, it good for creating iOS app with Xcode.

Answer 2

I think you should learn Java it's better