delphi字符串转换为char数组

var
  arrChar : array [0..4] of Char;
  b : Byte;
  s : string;
begin
  s := 'Test';
  Move(Pointer(s)^, arrChar, Length(s));   //string to array of char
  ShowMessage(arrChar);
  b := Ord(s[1]);   //First byte string to one single byte
  ShowMessage(Char(b));
end;