I have to write a C++/FLTK GUI monthly planner page program along the lines of Outlook. The program should start with a description of what it does and then ask for a month and year and the file name of the appointment file. The program then displays the requested month with appointments from the file. It should also allow the user to add additional appointments, which are then displayed on the calendar and also added to the appointment file. I have to implement "previous month" and "next month" buttons, which will display the new month and reread the appointments file.Here is the format for the appointments file: Each line begins with either a month/day or month/day/year. For example,

1/1 New Year's Day

4/1 April Fool's Day

3/26/2013 Passover

4/15/2014 Passover

3/31/2013 Easter

4/20/2014 Easter

11/4/2013 Hijri New Year

10/24/2014 Hijri New Year

7/4 Independence Day

12/25 Christmas