definations of built in library functions

[rams]

hi all

i am keen to know where does the built in functions (library
functions )like PRINTF(),MALLOC ()..etc... are defined.

as i know , header files contains only prototypes

i am using gnu compiler -Linux fedora .

[vippstar@gmail.com]

Re: definations of built in library functions

On Jun 2, 4:23 pm, rams <raman....@gmai l.comwrote:

hi all
>
i am keen to know where does the built in functions (library
functions )like PRINTF(),MALLOC ()..etc... are defined.
>
as i know , header files contains only prototypes
>
i am using gnu compiler -Linux fedora .

Weird, two days ago the exact same question was posted by someone
else.
read the C-FAQ:
<http://c-faq.com/resources/stdlibsrc.html>
thread-from-two-days-ago id: <9f6d4611-b2a2-4184-
a8da-681582f469e2@k3 0g2000hse.googl egroups.com>

[Richard Heathfield]

Re: definations of built in library functions

rams said:

hi all
>
i am keen to know where does the built in functions (library
functions )like PRINTF(),MALLOC ()..etc... are defined.

C doesn't have any functions called PRINTF or MALLOC in its standard
library. (Hint: C is case-sensitive.)

Implementations typically provide their library functions in object code
format - i.e. they've already been compiled, and all you get is the
relocatable binary.

But some implementors are public-spirited enough to provide source code.
The GNU folks do this, for example.

See http://www.gnu.org/software/libc/libc.html

--
Richard Heathfield <http://www.cpax.org.uk >
Email: -http://www. +rjh@
Google users: <http://www.cpax.org.uk/prg/writings/googly.php>
"Usenet is a strange place" - dmr 29 July 1999