gistfile1.cpp

     //  x.h: original header
     //
     #include <iostream>
     #include <ostream>
     #include <list>

     // None of A, B, C, D or E are templates.
     // Only A and C have virtual functions.
     #include "a.h"  // class A
     #include "b.h"  // class B
     #include "c.h"  // class C
     #include "d.h"  // class D
     #include "e.h"  // class E

     class X : public A, private B {
     public:
          X( const C& );
       B  f( int, char* );
       C  f( int, C );
       C& g( B );
       E  h( E );
       virtual std::ostream& print( std::ostream& ) const;
     private:
       std::list<C> clist_;
       D            d_;
     };

     inline std::ostream& operator<<( std::ostream& os,
                                      const X&      x )
       { return x.print(os); }