with Ada.Text_io; use Ada.Text_io;
with Ada.Integer_Text_io; use Ada.Integer_Text_io;

procedure enum4 is
   type Day is (Sunday, Monday, Tuesday, 
                Wednesday, Thursday, Friday, Saturday);

   package Day_IO is new Enumeration_IO(Day);

   use Day_IO;

   d: Day;
   i: Integer;

begin
   for i in Day'Range loop
      put(Day'Pos(i)); new_line;
   end loop;
   new_line;

   for i in 0 .. Day'Pos(Day'Last) loop
      put(i); 
      put(": ");
      put(Day'Val(i)); 
      new_line;
   end loop;

   put(Day'Image(Monday)); new_line;

   d := Monday;

   if d = Day'Value("Monday") then
      put_line("Time to get moving!");

   elsif d = Day'Value("  fRiDAY  ") then
      put_line("Time to get relax!");
   end if;

   if d < Friday then
      put(Day'Pos(Friday) - Day'Pos(d), 0);
      put(" days until Friday!");
   end if;
   new_line;

   i := Integer'Value("3");
   put(i);

end enum4;