text: #include <iostream>
  template<void (*fnc)()>
  void welcome_message()
  {
      fnc();
  }
  
  void dymmy_welcome()
  {
      std::cout << "Hello World" << std::endl;
  }
  
  int main()
  {
      welcome_message<dymmy_welcome>();
      return 0;
  }
  