\begin{flushleft}
\begin{minipage}[t]{\textwidth}
\hrulefill

\vspace*{-5mm}

\begin{verbatim}
#include<iostream.h>
#include<LINK/basic/List.h>

main()
{
        List<int> l;

        for (int i=0; i<3; i++)
                l.append(i);

        Iterator<int> it(&l);
        int next;
        while (it(next))
                cout << "element: " << next << endl;
}
\end{verbatim}

\vspace*{-7mm}

\hrulefill

\vspace*{-5mm}

\begin{verbatim} 
element: 0
element: 1
element: 2
\end{verbatim}

\vspace*{-6mm}

\hrulefill
\end{minipage}
\end{flushleft}