/**
 * Review this code and point out poor-style and real errors
 * ( Taken from Item 20 of Exceptional C++, H.Sutter )
 */
class Complex {
public:
  Complex( double real, double imaginary = 0 )
    : _real(real), _imaginary(imaginary) {
  }

  void operator+ ( Complex other ) {
    _real = _real + other._real;
    _imaginary = _imaginary + other._imaginary;
  }

  void operator<<( ostream os ) {
    os << "(" << _real << "," << _imaginary << ")";
  }

  Complex operator++() {
    ++_real;
    return *this;
  }

  Complex operator++( int ) {
    Complex temp = *this;
    ++_real;
    return temp;
  }
private:
  double _real, _imaginary;
};