complex.h

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//------------------------------------
//  complex.h
//  Complex number
//  (c) Reliable Software, 2006
//------------------------------------

#include <iostream.h>
#include <math.h>

class Complex
{
public:
	double real;
    double imag;
    Complex () {real=imag=0;}
    Complex (double re)
	{
		real=re;
		imag=0;
	}
    Complex (double re, double im)
	{
		real=re;
		imag=im;
	}

    double Re () const { return real; }
    double Im () const { return imag; }

	inline Complex operator +(const Complex &c)
	{
		return Complex(real+c.real,imag+c.imag);
	}	
	inline Complex operator -(const Complex &c)
	{
		return Complex(real-c.real,imag-c.imag);
	}
		
	inline Complex operator *(const Complex &c)
	{
		return Complex(real*c.real-imag*c.imag,real*c.imag+imag*c.real);
	}

	inline Complex operator /(const Complex &c)
	{
		return Complex((real*c.real+imag*c.imag)/
			(c.real*c.real+c.imag*c.imag),
			(imag*c.real-real*c.imag)/
			(c.real*c.real+c.imag*c.imag));
	}
};