// Ex6_03.cpp
  // Omitting function arguments
  include <iostream>
  using std::cout;
  using std::endl;
  
  void showit(const char message[] = "Something is wrong.");
  
  int main(void)
  {
    const char mymess[] = "The end of the world is nigh.";
  
    showit();                                 // Display the basic message
    showit("Something is terribly wrong!");   // Display an alternative
    showit();                                 // Display the default again
    showit(mymess);                           // Display a predefined message
  
    cout << endl;
    return 0;
  }
  
  void showit(const char message[])
  {
    cout << endl
         << message;
    return;
  }