Constants

Constants are used to represent fixed values which can't be altered later in the code.

How to declare a constant?

constants are declared using the Const keyword.

[ < attributeList > ] [ accessModifier ] [ Shadows ] Const constantName [ As datatype ] = value

• attributeList − attributeList is optional where you can specify the list of attributes applied to the constants.

• accessModifier − accessModifier is optional where you specify the accessibility of the constants like Public, Protected, Private, Friend or Protected Friend.

• Shadows − shadows is also optional which makes the constant hide a programming element of identical name.

• constantName − constantName specifies the name of the constant

• datatype − datatype specifies the data type of the constant

• value − value specifies the value assigned to the constant

Example

Const TOTAL As Integer = 100
Public Const NAME As String = "One Compiler"

Some of the in-built constants are as follows:

Constant	Description
vbCrLf	Carriage return and linefeed
vbCr	Carriage return
vbLf	Linefeed
vbNewLine	Newline
vbNullChar	Null character
vbNullString	("") which is used for calling external procedures
vbObjectError	Error number
vbTab	Tab
vbBack	Backspace