The standard C Library API

[boyfarrell]

Hello,

Is the Standard C Library API on the GNU website (http://www.gnu.org/software/libc/man...ode/index.html) the correct reference for all C programmes? Moreover, it is the version of C that is installed on UNIX, Linux and Windows systems by default? What documentation do you use to when coding?

Regards,

Dan

[Salem]

You have to read the footnotes of each function,

eg
This function was introduced in Amendment 1 to ISO C90.
This function is a GNU extension and is declared in string.h.

[foxman]

You can find the "official reference" of the C (more precisely, of C99 with TC1, TC2 and TC3) standard library here, chapter 7. Note that not all compilers are fully C99 compliant.

I normally use this website when I need to look for something related to the C standard library.

[boyfarrell]

Hi,

OK, thanks for the pointers. I notices that some functions were labels 'GNU Extensions' so wasn't too sure if I could point general users to that GNU C Library docs, but if they read it clearly I think I can.

Thanks,

Dan

[master5001]

A GNU extention just means that they are standard for the GNU family, and exist beyond the construct of standard C. Usually both gcc and msvc++ both properly comment things that are not standard in their header files.

If something is a GNU extention that means it will not necessarily exist in other compilers. Make sense?