#ifndef INTEGER_H
#define INTEGER_H

#include <iostream>

class Integer
{
public:
  Integer(int i = 0);

  explicit operator int () const;

  bool operator==(Integer const& i) const;
  bool operator<(Integer const& i) const;
  
  Integer& operator++();  
  friend std::ostream& operator<<(std::ostream& os, Integer const& i);
  
private:

  bool same_sign(Integer const& i) const;
  unsigned int positive(int i) const;
  
  unsigned long long int value;
  bool negative;
};

#endif