//--------------- FRAC.H ---------------

class Fraction
{

public:
   Fraction();			// Set numerator = 0, denominator = 1.
   Fraction(int n, int d=1);	// constructor with parameters

   // standard input/output routines
   void Input();		// input a fraction from keyboard.
   void Show() const;		// Display a fraction on screen

   // accessors
   int GetNumerator() const;		
   int GetDenominator() const;

   // mutator
   bool SetValue(int n, int d); // set the fraction's value through parameters

   // other
   double Evaluate() const;	    // Return the decimal value of a fraction

   bool Equals(const Fraction& f) const;   // compare this fraction to f
   Fraction Add(const Fraction& f) const;  // add this fraction and f, return result


private:
   int numerator;		// top part (any integer)
   int denominator;		// denom must be non-zero
};