How to add line numbers to a program listing/code?

Question

How do I copy code in to latex to get a result which looks like this:

enter image description here

...Without the red bars of course. I don't know how to get the numbering on the left side when I compile LaTeX. Using \verbatim only gives me the code.

Update: Having the code colored as it would appear in Matlab is necessary.

\usepackage{listings} and then \begin{lstlisting}your code here \end{lstlisting}. texdoc listings for more info — cmhughes, Apr 03 '13 at 21:33
nope, shouldn't do- have a look at the documentation for more examples :) — cmhughes, Apr 03 '13 at 21:38
I feel the urge to comment on using nested loops in matlab :P — percusse, Apr 03 '13 at 22:02
@percusse It's an example of non-optimized code. Worse case scenario. — TheRealFakeNews, Apr 03 '13 at 23:46
You might be interested in the matlab-prettifier package; see this answer. — jub0bs, Apr 28 '14 at 15:43

Mario S. E. · Accepted Answer · 2013-04-03T21:59:14.000

For my Master thesis I was writing a lot of code in MatLab. In order to have it "pretty printed" I used the same package as @cmhughes mentioned. It looks like this (at the preamble):

\usepackage{listings} %For code in appendix
\lstset
{ %Formatting for code in appendix
    language=Matlab,
    basicstyle=\footnotesize,
    numbers=left,
    stepnumber=1,
    showstringspaces=false,
    tabsize=1,
    breaklines=true,
    breakatwhitespace=false,
}

Then, when you want to include your code file, just use \lstinputlisting. Continuing with the example:

\lstinputlisting[language=Matlab]{./Code/calc_error.m}

I particularly loved this because it allowed me to change my code in MatLab in the folder itself and I didn't have to update it in LaTeX, since I was pointing directly to the file and not the code per se.

The result will be something like this:

$Code Example using <code>\usepackage{listings}</code> and setting it up with <code>\lstset</code>$

Of course, you can always play with \lstset in order to get what you want, as explained in the documentation

You can write \lstinputlisting{./Code/calc_error.m} since you have already specified language=matlab in your \lstset. — hpesoj626, Apr 04 '13 at 01:13
How to move the code to right in order to line numbers will not on the left margin? — Nick, Jun 22 '22 at 10:13

hpesoj626 · Answer 2 · 2013-04-05T00:58:12.653

If you don't need code highlighting then the fancyvrb package will do. I don't use matlab, but for purposes of demonstration, suppose you have a file named yourfile.m, then the following code will give you left-side numbering. VerbatimInput{yourfile.m} inputs your file.

\documentclass[10pt]{article}

\usepackage{fancyvrb}
\fvset{%
fontsize=\small,
numbers=left
}

\begin{document}
\VerbatimInput{yourfile.m}
\end{document}

Another option is the minted. It internally uses fancyvrb and uses the Pygments library of python for syntax highlighting. Try the following example, replacing yourfile.m with your actual file. You have to compile with -shell-escape option enabled. Read the manual regarding the installation of the Pygments library.

\documentclass[10pt]{article}

\usepackage{minted}
\newmintedfile{matlab}{
linenos=TRUE,
fontsize=\small,
}
\usemintedstyle{trac}

\begin{document}
\matlabfile{yourfile.m}
\end{document}

How to add line numbers to a program listing/code?

2 Answers2

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