//arg.cpp
// Illustrate the use of each of the complex friend functions.
#include <complex.h>  // This also includes iostream.h.
#include <conio.h>
void main(void)
{
   complex<double> z(3.1, 4.2);
   cout << "z = " << z << "\n";
   cout << "  實數部分 = " << real(z) << "\n";
   cout << "  虛數部分 = " << imag(z) << "\n";
   cout << "z 的共扼復數= " << conj(z) << "\n";

   double mag = sqrt(norm(z));
   double ang = arg(z);

   cout << "z的極坐標:\n";
   cout << "大小 = " << mag << "\n";

   cout << "角弧度 = " << ang << "\n";
   cout << "有極坐標再轉換為復數:\n";
   cout << "   z = " << polar(mag,ang) << "\n";
   getch();
}