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

int main() {
  double x = 0;

// Typowe stale

  cout << "pi    = " << M_PI  << endl 
       << "e     = " << M_E   << endl
       << "ln(2) = " << M_LN2 << endl;

// Typowe funkcje:

  cout << "\nPodaj argument: ";
  cin >> x;
  cout << sqrt (x)    << endl 
       << pow (2,x)   << endl
       << exp (x)     << endl 
       << sin (x)     << endl
       << fmod (x,10) << endl
       << fabs (x)    << endl;

  return 0;
}

/* Wszystkie funkcje biblioteki cmath dostepne sa pod adresem:

   http://www.cplusplus.com/reference/cmath/

   Stale sa dostepne np. tu:

   http://www.quantstart.com/articles/Mathematical-Constants-in-C
*/