Where are the library function definitions located?

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Where are the library function definitions located?

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02-06-2012

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Where are the library function definitions located?

Hi friends,
I hope everyone is doing fine. I have this confusion, hope you can help me out with it. The header files contain only function prototypes. Where are the function definitions located. For example, if I would like to see how printf works, where can I see its definition, stdio.h only tells us about the prototype.

Looking forward to your wonderful replies!

Thanks in advance!

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02-06-2012

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They are usually not kept around as source code, but in the binary library files libc.so and/or libc.a.

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02-07-2012

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If you want to see the code with your own eyes, grab the source code of any implementation of the standard C library, such as the GNU Glibc ( GLIBC, the GNU C Library ) or one of those that are maintained by the some BSD project (like the FreeBSD implementation).

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