[Tex/LaTex] Error using caption in listings, IEEE Access template

Question

I'm am using the IEEE Access Latex template and I'm getting errors when using the caption command in a listing environment. This does not happen with the IEEEtran template.

For example, this code works:

\documentclass{ieeeaccess}
\usepackage{graphicx} 
\usepackage{listings}
\usepackage{lipsum}

\begin{document}
\lipsum[1]
\begin{lstlisting}[label=listing1, language=C]
int main(void)
{
        printf("Hello world\n");
}
\end{lstlisting}
\end{document}

But the following does not, and the only difference is the caption command:

\documentclass{ieeeaccess}
\usepackage{graphicx} 
\usepackage{listings}
\usepackage{lipsum}

\begin{document}
\lipsum[1]
\begin{lstlisting}[label=listing1, language=C, caption=Listing 1]
int main(void)
{
        printf("Hello world\n");
}
\end{lstlisting}
\end{document}

In fact, the result is a series of errors like this:

! Undefined control sequence.
\@makecaption …capfont #2\strut }\ifdim \xfigwd
\columnwidth \setbox \@te…
l.12 …el=listing1, language=C, caption=Listing1]

! Missing number, treated as zero.

l.12 …el=listing1, language=C, caption=Listing1]

! Illegal unit of measure (pt inserted).

l.12 …el=listing1, language=C, caption=Listing1]

! Infinite glue shrinkage found on current page.
\@makecaption …\ }}{\vss \raggedright \noindent
\unhbox \@tempboxa \figcap…
l.12 …el=listing1, language=C, caption=Listing1]

Answer 1

ieeeaccess redefines the caption command and uses a length called \xfigwd which is normally set from a figure or table environment. As you listing uses neither of these environments, you'll have to manually do it:

\documentclass{ieeeaccess}
\usepackage{graphicx} 
\usepackage{listings}
\usepackage{lipsum}

\begin{document}
\lipsum[1]

\begingroup
\newlength{\xfigwd}
\setlength{\xfigwd}{\textwidth}
\begin{lstlisting}[label=listing1, language=C, caption={hgd}]
int main(void)
{
        printf("Hello world\n");
}
\end{lstlisting}
\endgroup
\EOD

\end{document}