// --------------------------------------------
//   frac.h    fractions  
// --------------------------------------------
#ifndef frac_h
#define frac_h

 class frac
  { private:
		int n;     // numerator
		int d;     // denominator
	 public:
		frac(int ni= 0, int di = 1);    // constructor (auto normalizes)
		frac(const frac &f);            // copy constructor
		frac &operator=(const frac &f); // assignment operator
		void normalize();
		friend int num(const frac &f);  // numerator
		friend int dnum(const frac &f); // denominator
		friend double eval(const frac &f);  // -> double
		friend void peval(const frac &f);   // print eval
		friend void pleval(const frac &f);  // print eval  nl
		friend frac operator+(const frac &f, const frac &g);
		friend frac operator*(const frac &f, const frac &g);
		friend frac operator/(const frac &f, const frac &g);
		friend int operator>(const frac &f, const frac &g);
		friend void r(frac &f);  // read
	};

 #endif
// ------------------------------------------------------------------