Emacs demo setup for C/C++ describe here: http://tuhdo.github.io/c-ide.html

Install emacs:

1. sudo add-apt-repository ppa:ubuntu-elisp/ppa
2. sudo apt-get update
3. sudo apt-get install emacs24 emacs24-el emacs24-common-non-dfsg

Install prequisits:

1. sudo apt-get install clang global

And finally clone this repo:

cd ~/ && git clone https://github.com/sIuv/emacs-config.git .emacs.d/