Shrinking monospace style for listings package

Question

I am working on a thesis and putting together a "pretty" listing. I'm looking at setting up a small font style for a code view. What I have here is:

\usepackage{listings}
\lstset{language=C,
numberstyle=\footnotesize,
basicstyle=\footnotesize,
numbers=left,
stepnumber=1,
frame=shadowbox,
breaklines=true}
%\usepackage[subsection]{placeins}
\usepackage{float}

But this comes out in a typical kerned font, vs. I am looking for smaller monospace, say, 10 points or so.

Answer 1

basicstyle=\footnotesize\ttfamily,

or with package microtype

\usepackage[T1]{fontenc}
\usepackage[scaled]{beramono}
\newcommand\Small{\fontsize{9}{9.2}\selectfont}
\newcommand*\LSTfont{\Small\ttfamily\SetTracking{encoding=*}{-60}\lsstyle}
...
\begin{lstlisting}[basicstyle=\LSTfont,...]
...

Which gives a better result.

Answer 2

You are missing a \ttfamily in the basicstyle. If this doesn't give you the size you want try \scriptsize or even \tiny instead of \footnotesize. You don't need to add the same size for the numberstyle again because basicstyle is used for everything by default.

\documentclass{article}
\usepackage{listings}
\lstset{language=C,
numberstyle=\footnotesize,
basicstyle=\ttfamily\footnotesize,
numbers=left,
stepnumber=1,
frame=shadowbox,
breaklines=true}

\begin{document}
Normal text

\begin{lstlisting}
    int a, b, c;
    b = 2;
    c = b++;
    a = b + c;
\end{lstlisting}

Normal text
\end{document}