listing settings

listing.tex

\usepackage{listings}

\lstset{
	language=C,
	basicstyle=\footnotesize\tt,
	keywordstyle=\footnotesize\sl,
	breaklines=true,
	numbers=left,
	frame=trbl,
	showstringspaces=false,
	firstnumber=1,
	numbers=left,
	xleftmargin=16pt,
	xrightmargin=4pt,
	basewidth={0.57em, 0.52em}
}

\lstinuputlisting{path/to/c-lang.c}