code listings

Insert code listings

Using the native “verbatim” environment

This is the LaTeX native method for inserting code listings. It typesets the contents as is using a typewriter-like font. But dones not provide any type of fontification.

\begin{verbatim}
#include <stdio.h>
int main() {
    printf ("hello world\n");
}
\end{verbatim}

Using the extended verbatim environemnt

The package “verbatim” extended the native verbatim evironemnt with some new features, including the command \verbatiminput{finalename} that icludes the contents of a file as a verbatim environment.

Using the “listings” package

The listings package ®memebr to ) creates its own evironment for code listings. This new environment is very customizable and reading the documentation is strongly advised. Still… if you are lazy, here are some suggestions:

\usepackage{listings}  % Fontification of source code listings
\lstset{
    captionpos=t,
    basicstyle={\ttfamily\footnotesize},
    numbers=left,
    numberstyle={\ttfamily\tiny},
    tabsize=2,
    language=Java,
    float,
    frame=single,
    columns=fullflexible,
    breaklines=true,
    postbreak=\mbox{\textcolor{red}{$\hookrightarrow$}\space},
    inputencoding=utf8,
    extendedchars=true,
    literate=
      {á}{{\'a}}1 {é}{{\'e}}1 {í}{{\'i}}1 {ó}{{\'o}}1 {ú}{{\'u}}1
      {Á}{{\'A}}1 {É}{{\'E}}1 {Í}{{\'I}}1 {Ó}{{\'O}}1 {Ú}{{\'U}}1
      {à}{{\`a}}1 {è}{{\`e}}1 {ì}{{\`i}}1 {ò}{{\`o}}1 {ù}{{\`u}}1
      {À}{{\`A}}1 {È}{{\'E}}1 {Ì}{{\`I}}1 {Ò}{{\`O}}1 {Ù}{{\`U}}1
      {ä}{{\"a}}1 {ë}{{\"e}}1 {ï}{{\"i}}1 {ö}{{\"o}}1 {ü}{{\"u}}1
      {Ä}{{\"A}}1 {Ë}{{\"E}}1 {Ï}{{\"I}}1 {Ö}{{\"O}}1 {Ü}{{\"U}}1
      {â}{{\^a}}1 {ê}{{\^e}}1 {î}{{\^i}}1 {ô}{{\^o}}1 {û}{{\^u}}1
      {Â}{{\^A}}1 {Ê}{{\^E}}1 {Î}{{\^I}}1 {Ô}{{\^O}}1 {Û}{{\^U}}1
      {œ}{{\oe}}1 {Œ}{{\OE}}1 {æ}{{\ae}}1 {Æ}{{\AE}}1 {ß}{{\ss}}1
      {ç}{{\c c}}1 {Ç}{{\c C}}1 {ø}{{\o}}1 {å}{{\r a}}1 {Å}{{\r A}}1
      {€}{{\EUR}}1 {£}{{\pounds}}1
}
...
\begin{lstlisting}[language=C]
#include <stdio.h>
int main() {
    printf ("hello world\n");
}
\end{lstlisting}

The “minted” package

The “minted” package uses Pygments for highlighting the code which supports just about any language you can think of. There is a good tutorial for the use of minted in the Overleaf documentation pages.

NOTE: if you use “minted” you must invoke LaTeX with the -shell-escape flag!

\usepackage{minted}
...
\begin{minted}{C}
#include <stdio.h>
int main() {
    printf ("hello world\n");
}
\end{minted}