#include <iostream>		// for "ostream", "istream" below
using namespace std;

class Complex
{
   friend Complex operator+(const Complex& , const Complex& );
   friend Complex operator-(const Complex& , const Complex& );
   friend Complex operator*(const Complex& , const Complex& );
   friend Complex operator/(const Complex& , const Complex& );

   friend ostream& operator<<(ostream& , const Complex& );
   friend istream& operator>>(istream& , Complex& );

public:
   Complex(double r = 0.0, double im = 0.0);
			// note that this constructor acts as:
			//   - default constructor (sets to 0 + 0i)
			//   - conversion constructor (double to Complex)
			//   - and constructor with 2 params (r + im * i)

   ~Complex();		// destructor.  Not really needed here.  

   // accessors
   double getReal() const;	// return real part
   double getImaginary() const;	// return imaginary part

   // mutator
   void set(double r, double im = 0.0);	// sets to r + im * i

   // increment and decrement operations
   Complex& operator++();	// prefix increment
   Complex operator++(int);	// postfix increment
   Complex& operator--();	// prefix decrement
   Complex operator--(int);	// postfix decrement

private:
   double real;		// real part.  Can be any double
   double imag;		// imaginary part.  Can be any double
};