private-header

I've been learning C recently, and in one of my textbooks I found a reference to a file with the ".r" extension. Now, as you can imagine, googling "r" or "file extension r" is not productive, so I wonder if you could help me out. It appears in the following code block #include "new.r" static const struct Class _String = { sizeof(struct String), String_ctor, String_dtor, String_clone, String_differ }; const void * String = & _String; The author mentions that it is a "private header", but I wish he could have been more clear as to what exactly that is. The instance in which I've encountered a .r

Can someone please give me an example of how public and private headers work? I have done some reading on the net but I can't seem to find much useful information with sample codes. I was advised that I should use private headers to separate the public and private parts of my code for creating a static library. After some reading I have a general idea of how it works, but would really appreciate a good example to get me started. Specifically, what I don't quite understand is how to put the interface functions in my public header, and the private variables/functions in my private header? Thanks