[SOLVED] Where are standard library functions like getchar() defined?

I'm new to programming, and I'm curious about the definitions of standard library functions like getchar(), but when I look in stdio.h, all I see are function prototypes. Where is the actual definition? Is it built into the compiler?
Thanks for your help.
Last edited by nbtrap (2012-02-21 17:24:31)

KingX wrote:That would be in stdio.c, stdio.h is the header file.
Thank you, I think I understand now. Correct me if I'm wrong: stdio.c is source code for glibc, which is compiled into a shared object file that is distributed with the glibc package. My only question would then be: how does the compiler know to link to the object file when it's not explicitly stated. For example when I compile a program, why do I not have to type:
gcc program.c /usr/lib/libc.so
and why does
gcc program.c
suffice?

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[SOLVED] Where are standard library functions like getchar() defined?

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