// Fraction.cc
#include "Fraction.h"
long
gcd (long v1, long v2)		// greatest common divisor
 {				/* see Primer p 111, 113 */
  long temp;
  while (v2) {			// is not yet 0

    temp = v2;
    v2 = v1 % v2;
    v1 = temp;
  }
  return v1;			// could move gcd() outside of the class

}
Fraction Fraction::add (const Fraction & right)
{
  return Fraction (num * right.den + den * right.num, den * right.den);
}

Fraction Fraction::operator + (const Fraction & right) {
  return Fraction (num * right.den + den * right.num, den * right.den);
}

std::ostream & operator << (std::ostream& os, const Fraction & p) {
  os << " ( " << p.num << " / " << p.den << " ) ";
  return os; // could be combined with previous line for this class
}

// do other methods here