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

#include<LINK/basic/DList.h>

main()
{
        List<int> l;

        l.insert(5);
        l.insert(4);
        l.insert(3);

        DList<int> dl(l);

        if (dl == l)
           cout << "they have the same elements in the same order" << endl;
        dl.append(7);

        cout << dl << endl; 
        cout << l << endl; 
}
\end{verbatim}

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\begin{verbatim} 
they have the same elements in the same order
(3 4 5 7)
(3 4 5)
\end{verbatim}

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