HTML clipboard In any programming language, variable store
value during a program's execution.
I am writing a program that converts amounts
between different currencies.
Example: In this example calculate and display the discounted price for
the amount of 50000.
Module
Module1
Sub Main()
Dim amount As Single
Dim discount
As Single
Dim discamount
As Single
amount = 50000
discount = 0.5
discamount = amount * (1 - discount)
MsgBox("your price is $" & discamount)
End Sub
End Module
Note: Single is a numeric data
type, it can store both integer and non- integer values.
Output :
Declaring
Variables:
You can declare integer variables:
Dim
width As Integer
You can declare multiple
variables of the same type having to repeat each variable's type:
In this statement will create
three integer variables:
Dim width, depth, height,
as Integer
In this statement will create two integer and two Double variables:
Dim
width, height As
Integer, area, volume As Double
To declare a variable, use the Dim statement followed by the variable's
name, the AS keyword, and its type, like:
Dim
height As Integer
Dim greetings As String
When declare variables, here are steps to use:
-
Start with a letter.
-
you can use only special character that can appear in the variable's name is the underscore character.
-
Limits of the characters is 255.
-
Must be unique within the scope.
-
Variable names in VB.NET is case-insensitive.
Variable
initialization
we can
initialize variables in the same line that declare them.
Here
declares an integer variables and initializes in to 2,450:
Dim
instance as Interger = 2450
Conclusion
In this article you learned what is variables in VB.NET and how to declare
and initialization variables. In next article you will learn type of variables.