\input{preamble-standalone.ltx}
\begin{document}

% Ex. No. 97 (Section 13.4.1 : Vertical lines)

\begin{tikzpicture}
 \tkzInit[xmax=5,ymax=2]
 \tkzAxeXY
 \tkzVLines[color = green]{1,2,...,4}
\end{tikzpicture}

\end{document}