#include <iostream>
#include <cmath>
using namespace std;

class Complex
{  
    double re, im;

  public:

    void ustaw (double, double);
    double modul ();

    static const double myNumber = 123.4567;
};

void Complex::ustaw (double a, double b)
{
  re = a;
  im = b;
}

double Complex::modul ()
{
  return sqrt (re*re + im*im) ;
}


int main ()
{
  Complex z;
  z.ustaw (3,4);
  cout << "Modul wynosi: " << z.modul() << "\n\n";
  cout << "Stala  Complex::myNumber  wynosi: " << Complex::myNumber << endl;
  return 0;
}