uses Windos, Crt;
var
  h, m, s, hund : Word;
function LeadingZero(w : Word) : String;
var
  s : String;
begin
  Str(w:0,s);
  if Length(s) = 1 then
    s := '0' + s;
  LeadingZero := s;
end;
begin
     Clrscr;
     Repeat
           GetTime(h,m,s,hund);
           Gotoxy(1,1);
           Writeln('Time: ',LeadingZero(h),':',
                   LeadingZero(m),':',LeadingZero(s),
                   '.',LeadingZero(hund));
     Until KeyPressed;
end.