Where is used c#?

Answer 1

mostly used for writing windows apps(windows 10, w10mobile, xbox & hololens)
It can be used for writing ios and Android apps using xamarin too

Answer 2

and now Microsoft released visual basic along with xamarin which allows c# dev to create android and apple applications

Answer 3

for developing windows applications, andriod apps and much more .

Answer 4

C# used in web development, Soft building, Mobile Applications, Game building

Answer 5

All .Net application.