\usepackage{listings}                           % for source code inclusion
\usepackage{xcolor} % color texts

\definecolor{codebg}{rgb}{0.95,0.95,0.95}       % light grey for code background
\definecolor{codecomment}{rgb}{0,0.5,0}         % comments in green
\definecolor{codestring}{rgb}{0.5,0,0}          % red strings


% Listings setup -----------------
\lstset{language=C,                             % programming language
morekeywords={},                                % additionnal keywords
basicstyle=\small\ttfamily,                     % style of the code
keywordstyle=\color{blue}\bfseries,             % style of the keywords
stringstyle=\color{codestring},                 % style of the strings
commentstyle=\color{codecomment},               % style of the comments
showspaces=false,                               % do not underline spaces in code
showstringspaces=false,                         % do not underline spaces in strings
showtabs=false,                                 % do not underline tabs
numbers = left,                                 % where are the line-numbers
numberstyle=\footnotesize,                      % style of the line-numbers
backgroundcolor=\color{codebg},                 % background-color
stepnumber=1,                                   % the step between two line-numbers.
extendedchars=true,                             % allows extended characters
columns=flexible,                               % sets the columns to non-fixed width
tabsize=2,                                      % sets the tabulation width
frame=trBL,                                     % adds a frame around the code with double line on the bottom
frameround=tttt,                                % rounds the frame
breaklines=true,                                % line breaks automatically
breakautoindent=true,                           % keep indentation level withh line breaks
captionpos=b,                                   % the caption is at the bottom
}