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Complex - Sample Complex number class implementation Author...

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/* Sample Complex number class implementation. Author: Eric Van Wyk Date: March 30, 2010 */ #include <iostream> #include <sstream> #include "Complex.h" #include "Debug.h" using namespace std ; Complex::Complex(double r, double i) { if (DEBUG) cout << "... Standard constructor: " << r << ", " << i << " #" << next_id_num << endl ; real = r; imag = i; id_num = next_id_num ; ++ next_id_num ; } int Complex::next_id_num = 0 ; Complex::Complex (double r) { if (DEBUG) cout << "... Standard constructor: " << r << " #" << next_id_num << endl ; real = r; imag = 0; id_num = next_id_num ; ++ next_id_num ; } string Complex::show() const { ostringstream s; s << "(" << real << " + " << imag << "i)" << "#" << id_num ; return s.str() ; } Complex::~Complex() { if (DEBUG) cout << "... Destructor for: " << real << ", " << imag << ", #" << id_num << endl ; } Complex::Complex (const Complex & c) { if (DEBUG) cout << "... Copy constructor for : " << c.real << ", " << c.imag << " copying #" << c.id_num << " to create #" << next_id_num << endl ; real = c.real ; imag = c.imag ; id_num = next_id_num ++ ; } void Complex::addTo (Complex c) { real += c.real ; imag += c.imag ;
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} void Complex::multiplyBy (Complex c) { double new_real, new_imag ; new_real = real * c.real - imag * c.imag ; new_imag = imag * c.real + real * c.imag ; real = new_real ; imag = new_imag ; } bool Complex::equals(Complex c) { return real == c.real && imag == c.imag ;
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