#ifndef Fraction_SEEN__
#define Fraction_SEEN__
///////    Fraction.h    ///////
#include "Number.h"

class Fraction : public Number
{    friend class Number;
     friend class Integer;
   protected:
     Fraction(int n, int d)
     : num(n), denom(d) {}
     Number OP   *(CS Number& n) CS;
     Number OP   +(CS Number& n) CS;
     Number OP   /(CS Number& n) CS;
     Number AddFra(CS Number& f) CS;
     Number TimFra(CS Number& f) CS;
     Number DivFra(CS Number& f) CS;
     Number AddInt(CS Number& i) CS;
     Number TimInt(CS Number& i) CS;
     Number DivInt(CS Number& i) CS;  // i / *this
     void display();
   private:
     Number* copy() const;
     int num;             // numerator
     unsigned int denom;  // denominator
};

inline Number Fraction::OP *(CS Number& n) CS
       {  return Number::TimFra(n); }

inline Number Fraction::OP +(CS Number& n) CS
       {  return Number::AddFra(n); }

inline Number Fraction::OP /(CS Number& n) CS
       {  return Number::DivFra(n); }

inline Number* Fraction::copy() const
       {  return (new Fraction(num, denom)); } 
#endif