How to install new units (i mean includes ex: stdio.h) for my C

Question

How to install new units (i mean includes ex: stdio.h) for my C, and how to download more?

Answer 1

You're looking for libraries. The headers (normally) just contain information to tell the compiler about the content of the library. There are quite a few C libraries to be found, covering all sorts of different topics. Of course, SourceForge isn't the only place to look -- Github and Google code would be a couple more obvious ones.

Answer 2

put the header file on the same folder as your main source file, ex:

/folder /-->main.c

    -->function.h
    -->function.c

then on main.c include it by writing :

  #include "function.h"

the quotes are used to include a header file that's on the same folder as your c source file u can also write your own and include them like above.