void setup() {
  // put your setup code here, to run once:

}

class dd {
  unsigned x, y;
  const char* napis;
  public:
  dd(): x(0), y(0), napis("brak") {}
  dd(const unsigned a1, const unsigned a2, const char* s1): x(a1), y(a2), napis(s1) {}
};

void loop() {
  dd lol;
  dd hmm(2, 10, "lol");
}