Delphi data type list

Category				Range	Bytes	Remarks
Simple Type	Ordinal number	Integer	Integer	-2147483648 .. 2147483647	4	Signed 32-bit
			Cardinal	0... 4294967295	4	Unsigned 32-bit
			Shortint	-128 .. 127	1	8-digit signed
			Smallint	-32768 .. 32767	2	Signed 16-bit
			Longint	-2147483648 .. 2147483647	4	Signed 32-bit
			Int64	-263 .. 263	8	Signed 64-bit
			Byte	0... 255	1	Unsigned 8-bit
			Word	0... 65535	2	Unsigned 16-bit
			Longword	0... 4294967295	4	Unsigned 32-bit
		Character	Ansichar (char)	ANSI character set		8-digit
			Widechar	Unicode Character Set		16-bit
		Boolean	Boolean	False <true Ord (false) = 0 Ord (true) = 1 Succ (false) = true PRED (true) = false	1
			Bytebool	False <> true Ord (false) = 0 Ord (true) <> 0 Succ (false) = true PRED (false) = true	1
			Wordbool		2
			Longbool		4
		Enumeration
		Sub-Boundaries
	Real Number		Real	5.0x10-324 .. 1.7x10308	8	[Precision] 15 .. 16
			Real48	2.9 × 10-39 .. 1.7 × 1038	6	[Precision] 11 .. 12; Backward compatibility
			Single	1.5x10-45 .. 3.4x1038	4	[Precision] 7 .. 8
			Double	5.0x10-324 .. 1.7x10308	8	[Precision] 15 .. 16
			Extended	3.6x10-4951 .. 1.1x104932	10	[Precision] 19 .. 20
			Comp	-263 + 1 .. 263-1	8	[Precision] 19 .. 20
			Currency	-922337203685477.5808 .. 922337203685477.5807	8	[Precision] 19 .. 20
String			Optional string	255 characters	2. 256b	Backward compatibility
			Ansistring	About 231 characters	4B .. 2 GB	8 (ANSI) characters
			Widestring	About 230 characters	4B .. 2 GB	Multi-user service and Multi-language applications; Compatible with BSTR defined by com
			Others	String String [0 .. 255] Pchar Pansistring Pwidestring
Structure Type	Set		Set	Up to 256 elements [0 .. 255]
	Array	Static Array
		Dynamic Array
	Record		Record
	File		File
	Class		Class
	Class reference		Class reference
	Interface		Interface
Pointer type	No type pointer		Pointer
	Type pointer	Predefined type pointer	Pansistring Pstring Pbytearray Pcurrency Pdouble Pextended Psingle Pinteger Polevariant P1_string Ptextbuf Pvarrec Pvariant Pwidestring Pwordarray
Process type	Program process type		Procedural
	Object process type		Procedural
Variant Type			Variant
			Olevariant