Delphi Language Guide Delphi for Microsoft Win32 Delphi for the Microsoft. Net framework

Types for integer constants
Range of constant(hexadecimal)
Range of constant(decimal) Type
-$8000000000000000..-$80000001
-2^63..-2147483649
Int64
-$80000000..-$8001
-2147483648..-32769
Integer
-$8000..-$81
-32768..-129
Smallint
-$80..-1
-128..-1
Shortint
0..$7F
0..127
0..127
$80..$FF
128..255
Byte
$0100..$7FFF
256..32767
0..32767
$8000..$FFFF
32768..65535
Word
$10000..$7FFFFFFF
65536..2147483647
0..2147483647
$80000000..$FFFFFFFF
2147483648..4294967295
Cardinal
$100000000..$7FFFFFFFFFFFFFFF 4294967296..2^631
Int64
Here are some examples of constant declarations:
104

---

const
  Min = 0;
  Max = 100;
  Center = (Max - Min) div 2;
  Beta = Chr(225);
  NumChars = Ord('Z') - Ord('A') + 1;
  Message = 'Out of memory';
  ErrStr = ' Error: ' + Message + '. ';
  ErrPos = 80 - Length(ErrStr) div 2;
  Ln10 = 2.302585092994045684;
  Ln10R = 1 / Ln10;
  Numeric = ['0'..'9'];
  Alpha = ['A'..'Z', 'a'..'z'];
  AlphaNum = Alpha + Numeric;