Who writes header files

Question

We have been learning C and it might seem like a stupid question to ask. I want to know who exactly writes header files. I know that they have predefined functions in them and can be accessed as per need.

Answer 1

The header files that come with your compiler are written by the authors of your compiler and C library. Header files for third-party libraries are written by the authors of those libraries. Header files for your software are written by you.

Answer 2

Header files are written by the programmers to export the library functions or class. Header files may used to define classes, macros , member functions, structures, variables etc. if you make some changes in header files of your library it may affect your library functions. You have to recompile the library before use.