#include "stdstuff.h"

#include "Date.h"


int main () {

  Date d, d2;
  int days;
  char day_names [][10] = { "Monday", "Tuesday", "Wednesday", "Thursday",
                            "Friday", "Saturday", "Sunday" };

  // If the following is included, the constructor will quit.
  // Date dummy (-1, -1, -1);

  for (;;) {

    cout << "Enter dd mm yyyy (invalid values to terminate): ";
    d.read (cin);

    if (cin.fail()) {
      pause();
      return 0;
    }

    cout << "Enter days to move date forward (may be -ve): ";
    cin >> days;

    d.move (days); // if something goes wrong, program aborts 
    cout << "The new date is ";
    d.write (cout);
    cout << ".  That is a " << day_names[d.dayInWeek()- 1] << ".\n";

    // a simple example of using a function which returns a date
    d2 = d.nextDay(); // if something goes wrong, program aborts
    cout << "The day after that is ";
    d2.write(cout);
    cout << endl;

    // a trickier way of doing the same thing
    cout << "The day after that is ";
    d.nextDay().write(cout); // again, if something goes wrong, program aborts
    cout << endl;

    cout << "Comparing that day with the next day produces "
         << d.compareTo(d.nextDay()) << endl;

  }

  pause ();
  return 0;

}