#ifndef __SCONTI_H
#define __SCONTI_H

#ifndef __REAL_H
#include <real.h>
#endif

#define CHKVALID  CHECK( _valid, "Tentativo di usare uno sconto non valido!" )

class TSconto : public TObject
{
private:
  
  TString _exp;
  bool _valid;
  int _errorpos;
  real _part;
  static const real cento;
  
public:
  
  TString& get( void ){ CHKVALID; return _exp; }
  void set( const TString& exp, bool signal = FALSE );
  bool is_valid( ){ return _valid; }
  real sconto( );
  char * scontostr( int len = 0, int dec = UNDEFINED, char pad = ' ' ){ CHKVALID; real p(sconto()); return p.stringa( len, dec, pad ); } 
  
};

#undef CHKVALID
#endif