// ----------------------------------------------------------------------
//
// virtovrd.cc - Can we override virtual functions in a derived class?
//
// History:
//   28-Aug-2000  WEB  Initial draft
//   18-Jan-2001  WEB  Remove unused function argument's name
//   29-Jan-2001  WEB  Remove pointers' const qualification to avoid
//     tickling DEFECT_NO_DELETE_CONST
//   25-Apr-2001  WEB  s/<ISOcxxSyntax.hh>/"ISOcxx\/ISOcxxSyntax.hh"/
//
// ----------------------------------------------------------------------


#include "ISOcxx/ISOcxxSyntax.hh"


class B  {

public:
  B()  { ; }

  virtual  int  f( int    ) const  { return 1; }
  virtual  int  f( double ) const  { return 2; }

};  // B


class D : public B  {

public:
  D()  { ; }

  #ifndef DEFECT_NO_VIRTUAL_OVERRIDE
    using B::f;
  #else  // defective
    virtual  int  f( double ) const  { return 2; }
  #endif
  virtual  int f( int ) const  { return 3; }

};  // D



int  main()  {

  int  result   = 0;

  {
    B *  bp = new B;
    if ( 1 != bp->f(0)   )   result +=  1;    // B::f(int)
    if ( 2 != bp->f(0.0) )   result +=  2;    // B::f(double)
    delete bp;
  }

  {
    D *  dp = new D;
    if ( 3 != dp->f(0)   )   result +=  4;    // D::f(int)
    if ( 2 != dp->f(0.0) )   result +=  8;    // D::f(double)
    delete dp;
  }

  {
    B *  bp = new D;
    if ( 3 != bp->f(0)   )   result += 16;    // D::f(int)
    if ( 2 != bp->f(0.0) )   result += 32;    // B::f(double)
    delete bp;
  }

  return result;

}  // main()