I need to learn how to compile libraries for the OS. Is Geany a Cpp compiler or not?

Also from today I know that network settings are stored in /etc/network/intefaces

But I'm still unable to put wi-fi up. I've got patch-cord, but even when I plug it to the PC I can't get in to configure it. Maybe in that case something will be clearer. Cause I still have no idea according its settings. What network mask does it use?

Oh, well. I need to talk to someone. I really really need it.