/etc path: Can I hard code?

From: Tosca Berisha (tberisha_at_uucp.gov)
Date: 02/16/05

Date: Wed, 16 Feb 2005 15:02:53 -0500

Is the "etc" directory of every linux distribution under root "/"? Or is
there some information stored somwhere that leads me to the "etc" directory.

I just wanna know if I can hardcode that path in my C++ program.