Where to find stdio.h functions implementations?

Question

I study C and I noticed that I can\'t find the implementation file for some header files like, for example, stdio.h which is a library which contains a lot of i

Answer 1

On Ubuntu or other OS that uses aptitude for package management, you can use:

apt-get source libc6

for example.

Also, running gcc in verbose mode will tell you the details of the paths it is using. This should help you find which include and library paths it's using.

gcc -v

or

gcc -Wl,--verbose