\begin{Verbatim}[commandchars=\\\{\},codes={\catcode`\$=3\catcode`\^=7\catcode`\_=8\relax}]
\PYG{+w}{    }\PYG{c+c1}{// test length function}
\PYG{k+kt}{void}\PYG{+w}{ }\PYG{n+nf}{traverse}\PYG{p}{(}\PYG{n}{listElement}\PYG{o}{*}\PYG{+w}{ }\PYG{n}{start}\PYG{p}{)\PYGZob{}}
\PYG{+w}{    }\PYG{n}{listElement}\PYG{o}{*}\PYG{+w}{ }\PYG{n}{current}\PYG{+w}{ }\PYG{o}{=}\PYG{+w}{ }\PYG{n}{start}\PYG{p}{;}
\PYG{+w}{    }\PYG{k}{while}\PYG{p}{(}\PYG{n}{current}\PYG{+w}{ }\PYG{o}{!=}\PYG{+w}{ }\PYG{n+nb}{NULL}\PYG{p}{)\PYGZob{}}
\PYG{+w}{        }\PYG{n}{current}\PYG{o}{\PYGZhy{}\PYGZgt{}}\PYG{n}{printFunction}\PYG{p}{(}\PYG{n}{current}\PYG{o}{\PYGZhy{}\PYGZgt{}}\PYG{n}{data}\PYG{p}{);}
\PYG{+w}{        }\PYG{c+c1}{// printf("%s\n", current->data);}
\PYG{+w}{        }\PYG{n}{current}\PYG{+w}{ }\PYG{o}{=}\PYG{+w}{ }\PYG{n}{current}\PYG{o}{\PYGZhy{}\PYGZgt{}}\PYG{n}{next}\PYG{p}{;}
\PYG{+w}{    }\PYG{p}{\PYGZcb{}}
\PYG{p}{\PYGZcb{}}
\end{Verbatim}