What is use of C++ programming language and can i make window or android app with c++. If yes then how?

Answer 1

Hello! I am not sure about Cpp, but Csharp can.
There was a community that made a great platform called Xamarin, by using C# and XML you could create Android/iOS applications.
Microsoft bought Xamarin, now by inatalling VS and other plugins you can be an app creator.
C# is better for app and games you know...
Cpp + Java = C#
so: SEE SHARP!

Answer 2

For Android apps you should learn Java/Kotlin, Flutter or React Native if you know JavaScript. C++ can be used to create desktop apps, but I would suggest to use C#, you can use Visual Studio IDE where you can drag and drop elements to create GUI.