What do ! and # mean when attached to numbers in VB6?

I have recently come across numeric literals such as 10! and 50# in Visual Basic programs. Could anyone tell me what 开发者_C百科these punctuation marks mean?

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They are called type declaration characters. This article has more information.

  % Integer
  & Long
  ! Single
  # Double
  $ String
  @ Currency

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Using these characters specifies the data type of a numeric literal.

I thought this would be covered in the VB6 manual online but I can't find it.

However I just proved it with the TypeName function in the VB6 IDE Immediate Window:

? typename(10!)
Single
?typename(10#)
Double
?typename(10%)
Integer
?typename(10&)
Long
?typename(10@)
Currency

PS Be aware that a VB6 Integer is 2 bytes, -32,768 to 32,767.

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****Here is a Cheat Sheet for DataTypes ****

Variable End with:

$ : String
% : Integer (Int16)
& : Long (Int32)
! : Single
# : Double
@ : Decimal

Start with:

&H : Hex
&O : Octal

Comparison between VB and VB.Net (reference)

Visual Studio .Net added Literal Types (reference)

Value End with: (For more complete list, refer the the reference)

S : Short (Int16)
I : Integer (Int32)
L : Long (Int64)
F : Single
R : Double
D : Decimal