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VBA - Variables

VBA - Variables Shout 4 Education
Variable is a named memory location used to hold a value that can be changed during the script execution. Following are the basic rules for naming a variable.
  • You must use a letter as the first character.
  • You can't use a space, period (.), exclamation mark (!), or the characters @, &, $, # in the name.
  • Name can't exceed 255 characters in length.
  • You cannot use Visual Basic reserved keywords as variable name.
Syntax
In VBA, you need to declare the variables before using them.
Dim <> As <>

Data Types

There are many VBA data types, which can be divided into two main categories, namely numeric and non-numeric data types.

Numeric Data Types

Following table displays the numeric data types and the allowed range of values.
TypeRange of Values
Byte0 to 255
Integer-32,768 to 32,767
Long-2,147,483,648 to 2,147,483,648
Single
-3.402823E+38 to -1.401298E-45 for negative values
1.401298E-45 to 3.402823E+38 for positive values.
Double
-1.79769313486232e+308 to -4.94065645841247E-324 for negative values
4.94065645841247E-324 to 1.79769313486232e+308 for positive values.
Currency-922,337,203,685,477.5808 to 922,337,203,685,477.5807
Decimal
+/- 79,228,162,514,264,337,593,543,950,335 if no decimal is use
+/- 7.9228162514264337593543950335 (28 decimal places).

Non-Numeric Data Types

Following table displays the non-numeric data types and the allowed range of values.
TypeRange of Values
String (fixed length)1 to 65,400 characters
String (variable length)0 to 2 billion characters
DateJanuary 1, 100 to December 31, 9999
BooleanTrue or False
ObjectAny embedded object
Variant (numeric)Any value as large as double
Variant (text)Same as variable-length string
Example
Let us create a button and name it as 'Variables_demo' to demonstrate the use of variables.
VBA - Variables Shout4Education

Private Sub say_helloworld_Click()
   Dim password As String
   password = "Admin#1"

   Dim num As Integer
   num = 1234

   Dim BirthDay As Date
   BirthDay = DateValue("30 / 10 / 2020")

   MsgBox "Passowrd is " & password & Chr(10) & "Value of num is " &
      num & Chr(10) & "Value of Birthday is " & BirthDay
End Sub
Output
Upon executing the script, the output will be as shown in the following screenshot.
VBA - Variables Shout For Education

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VBA - Variables
VBA Tutorials ... Best VBA Tutorials only @ Shout4Education ... Learn VBA in an Easy and Simplified Way ... Keep Shouting For Education and Keep Learning ... VBA - Variables Shout 4 Education Variable is a named memory location used to hold a value that can be changed during the script execution. Following are the basic rules for naming a variable. You must use a letter as the first character. You can't use a space, period (.), exclamation mark (!), or the characters @, &, $, # in the name. Name can't exceed 255 characters in length. You cannot use Visual Basic reserved keywords as variable name. Syntax In VBA, you need to declare the variables before using them. Dim <> As <> Data Types There are many VBA data types, which can be divided into two main categories, namely numeric and non-numeric data types. Numeric Data Types Following table displays the numeric data types and the allowed range of values. Type Range of Values Byte 0 to 255 Integer -32,768 to 32,767 Long -2,147,483,648 to 2,147,483,648 Single -3.402823E+38 to -1.401298E-45 for negative values 1.401298E-45 to 3.402823E+38 for positive values. Double -1.79769313486232e+308 to -4.94065645841247E-324 for negative values 4.94065645841247E-324 to 1.79769313486232e+308 for positive values. Currency -922,337,203,685,477.5808 to 922,337,203,685,477.5807 Decimal +/- 79,228,162,514,264,337,593,543,950,335 if no decimal is use +/- 7.9228162514264337593543950335 (28 decimal places). Non-Numeric Data Types Following table displays the non-numeric data types and the allowed range of values. Type Range of Values String (fixed length) 1 to 65,400 characters String (variable length) 0 to 2 billion characters Date January 1, 100 to December 31, 9999 Boolean True or False Object Any embedded object Variant (numeric) Any value as large as double Variant (text) Same as variable-length string Example Let us create a button and name it as 'Variables_demo' to demonstrate the use of variables. VBA - Variables Shout4Education Private Sub say_helloworld_Click() Dim password As String password = "Admin#1" Dim num As Integer num = 1234 Dim BirthDay As Date BirthDay = DateValue("30 / 10 / 2020") MsgBox "Passowrd is " & password & Chr(10) & "Value of num is " & num & Chr(10) & "Value of Birthday is " & BirthDay End Sub Output Upon executing the script, the output will be as shown in the following screenshot. VBA - Variables Shout For Education @ Shout 4 Education , @ Shout For Education
https://1.bp.blogspot.com/-6xBCiWeXIsc/XoZMSCtu_6I/AAAAAAAAA40/L-2muAnBbkEdiOgs7Ja3hJoFd8-3ofuuQCPcBGAYYCw/s640/VBA_Tutorials_Shout4Education.jpg
https://1.bp.blogspot.com/-6xBCiWeXIsc/XoZMSCtu_6I/AAAAAAAAA40/L-2muAnBbkEdiOgs7Ja3hJoFd8-3ofuuQCPcBGAYYCw/s72-c/VBA_Tutorials_Shout4Education.jpg
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