What is defferent using C++ in Android & PC?

Answer 1

C++ works and codes the same way both in Android and PC.

But if you are referring to the differences between running C++ codes on Code Playground here in SoloLearn compared to running the same codes on PC console:

The difference is that PC console runs the codes real time while Code Playground sends the codes back to their server to compile, and send the program output back to the client. This means that you need to type in all input for Code Playground prior to code compilation, which poses quite an inconvenience.