Why do we write static void......, why not simply void ...... And what about header files that we have to include

Answer 1

In c# you include files using "Using System;" for example, static void just means that the method is static and doesn't have an explicit return type or function, using static is not compulsory, see static/public/private.

Answer 2

If you follow the lessons in this app you will learn these things. The namespace keyword is used to declare a scope that contains a set of related objects. You can use a namespace to organize code elements and to create globally unique types.

Answer 3

and what's that namespace and what's it's use

Answer 4

means it's compulsory to write static void