Listing 5 The header <typeinfo>

#ifndef _TYPEINFO_
#define _TYPEINFO_
             // class badtypeid
class badtypeid : public xlogic {
protected:
//      virtual void do_raise();
public:
       badtypeid();
       virtual ~badtypeid();
       };
             // class typeinfo
class typeinfo {
       const char *_Name;
       const int _Desc;        // implementation dependent
       typeinfo(const typeinfo&);
       typeinfo& operator=(const typeinfo&);
public:
       virtual ~typeinfo();
       int operator==(const typeinfo&) const;
       int operator!=(const typeinfo& _Rop) const
             {return (!(*this == _Rop)); }
       int before(const typeinfo&);
       const char *name() const {return (_Name); }
       };
#endif

// End of File