c function path .

dina3e · 04-15-2008, 09:13 PM

i just want to find out the c source code. but i am unable to find all these thing , i want to know the implemntation of some c function like printf and many other function.

where the functions source code resides???

bkcreddy17 · 04-16-2008, 02:34 AM

Do you mean that you want to write a C Program on linux and run it?
Do this:
#yum install gcc*
or
#rpm -ivh gcc*

open vi editor and type the program.
#vi sample.c (file extention should be .c)
#include<stdio.h>
main(void)
{
printf("Welcome to the world of C");
}
---save the file (:wq)
#gcc sample.c
--it produces a file called a.out
#./a.out

Welcome to the world of C
(which is your out put)

Zmyrgel · 04-16-2008, 02:37 AM

Just quessing but I think its something like /usr/include/ where the source is.

dina3e · 04-16-2008, 09:37 PM

Quote:

Originally Posted by Zmyrgel

Just quessing but I think its something like /usr/include/ where the source is.

what the path you mentioned , only the header files are present. i am looking for the source code of the all the function like sizeof(), memset() ,etc.. i just want to find that how the functions are written .

theNbomr · 04-16-2008, 11:07 PM

As I understand it, all functions in the standard C library are in the GNU libc library. Source code can be downloaded from http://www.gnu.org/software/libc/.
--- rod.