import java.io.*;

class CalendarChange3 
{

 public static void main(String[] args) throws IOException
 {
  int d,m,y;
  int change;
  String command;
  char ch;
  Calendar3 calendar;
  BufferedReader in = Text.open(System.in);
  for(;;)
     try
       {
        System.out.print("Enter day: ");
        d=Text.readInt(in);
        System.out.print("Enter month: ");
        m=Text.readInt(in);
        System.out.print("Enter year: ");
        y=Text.readInt(in);
        calendar = new Calendar3(d,m,y);
        break;
       }
     catch(DateException e)
       {
        System.out.println("Invalid date "+e.getMessage());
       }
  calendar.display();
  System.out.println("Enter + to add a day, - to subtract a day");
  System.out.println("followed by a number for multiple days");
  System.out.println("Or enter q to quit");
  do
    {
     System.out.print("> ");
     command=Text.readString(in);
     ch=command.charAt(0);
     change=0;
     if(ch=='+')
        change=1;
     else if(ch=='-')
        change=-1;
     else if(ch!='q')
        System.out.println("Invalid command");
     if(change!=0)
        if(command.length()==1)
           calendar.addDay(change);
        else
           try
              {
               change*=Integer.parseInt(command.substring(1));
               calendar.addDay(change);
              }
           catch(NumberFormatException e)
              {
               System.out.println("Invalid command");
              }
     calendar.display();
    }
  while(ch!='q');
  System.exit(0);
 }

}