I'm using Ubuntu 10.10 as my os, I am using emacs in Gnome.

I have installed emacs and cscope successfully:

sudo apt-get install emacs

sudo apt-get install cscope

then run command in the directory of the source code folder in my terminal, and the index files have been produced.

cscope-indexer

and add the following stuf in .emacs in home/username folder

(require 'xcscope))
)

However, there isn't a short-cut ,'CSCOPE', in the emacs ui and when I use ctrl_c + s to use cscope, emacs said it's undefined.

What should i do now to make cscope run.