var s: ShortString;
s := 'Delphi Programming';
//S_Length := Ord(s[0]));
//which is the same as Length(s)
var ssmall: String[50];
ssmall := 'Short string, up to 50 characters';
var s: String;
s := 'The s string can be of any size...';
s[2]:='T';
var s1,s2: String;
s1 := 'first string';
s2 := s1;
var s : WideString;
    c : WideChar;
	
 s := 'Delphi_ Guide';
 s[8] := 'T';
 //s='Delphi_TGuide';	
procedure TForm1.Button1Click(Sender: TObject);
var
 Drive: Char;
 DriveLetter: String[4];
begin
 for Drive := 'A' to 'Z' do
 begin
  DriveLetter := Drive + ':\';
  case GetDriveType(PChar(Drive + ':\')) of
   DRIVE_REMOVABLE:
    Memo1.Lines.Add(DriveLetter + ' Floppy Drive');
   DRIVE_FIXED:
    Memo1.Lines.Add(DriveLetter + ' Fixed Drive');
   DRIVE_REMOTE:
    Memo1.Lines.Add(DriveLetter + ' Network Drive');
   DRIVE_CDROM:
    Memo1.Lines.Add(DriveLetter + ' CD-ROM Drive');
   DRIVE_RAMDISK:
    Memo1.Lines.Add(DriveLetter + ' RAM Disk');
   end;
 end;
end;