// rational-overload.h
// header file containing
// class declaration for
// RationalNumber class
// implementation in rational-overload.cc
// Problem 8.17 in D&D
#ifndef rational_H
#define rational_H
#include <iostream.h>

class RationalNumber
{
  friend ostream &operator<<(ostream &, const RationalNumber &);
  friend istream &operator>>(istream &, RationalNumber &);  
 public:
  // default constructor
  RationalNumber(int = 0, int = 1);
  // overload operators for "normal" operation
  RationalNumber operator+(const RationalNumber&);
  RationalNumber operator-(const RationalNumber&);
  RationalNumber operator*(const RationalNumber&);
  RationalNumber operator/(const RationalNumber&);
  // overload relational operators for "normal" operation
  int operator>(const RationalNumber&) const;
  int operator<(const RationalNumber&) const;
  int operator>=(const RationalNumber&) const;
  int operator<=(const RationalNumber&) const;
  int operator==(const RationalNumber&) const;
  int operator!=(const RationalNumber&) const;
 private:
  int numerator;
  int denominator;
  void reduction(void);
};
#endif