library complex_numbers;

import 'dart:math' as math;

class ComplexNumber {
  num _real;
  num _imag;

// 1- Here we define different ways to build a complex number:
  // constructors:
     ComplexNumber([this._real = 0, this._imag = 0]);
    ComplexNumber.im(num imag) : this(0, imag);
     ComplexNumber.re(num real) : this(real, 0);

// 2- The normal utility methods to get and set the real and         // imaginary part, to get the absolute value and the angle, to      // compare two complex numbers:
  num get real => _real;
  set real(num value) => _real = value;

  num get imag...