\documentclass{article}
\usepackage{xcolor}
\usepackage{listings}

\definecolor{darkgreen}{cmyk}{.61,0,.61,.18}

% Look in the documentation of the listings package for more options
\lstset{
	language=matlab,
	basicstyle=\ttfamily,
	caption=\lstname, % Uses the filename as the caption
	backgroundcolor=\color[rgb]{0.9,0.9,0.9},
	frame=lines,
	keywordstyle=\color{blue}, % blue is a built-in color t
	commentstyle=\color{darkgreen}, % darkgreen is a color I defined above
	numbers=left,
	breaklines=true}
	
\title{name of the assignment}
\author{your name here}

\begin{document}
\maketitle	
	
Here is some code that was saved in an external file. This is perfect if you are still working on the code and always want to show the most recent code in your \LaTeX{} file.
 
\lstinputlisting{matlabsample.m}
 


\end{document}