Constants in Visual Basic .NET

Go supports constants of character, string, boolean, and numeric values.

const declares a constant value.

Module ConstantsExample

    Const s As String = "constant"

    Sub Main()
        Console.WriteLine(s)

        ' A const statement can appear anywhere a var statement can.
        Const n As Integer = 500000000

        ' Constant expressions perform arithmetic with arbitrary precision.
        Const d As Double = 3e20 / n
        Console.WriteLine(d)

        ' A numeric constant has no type until it’s given one, such as by an explicit conversion.
        Console.WriteLine(CLng(d))

        ' A number can be given a type by using it in a context that requires one, such as a variable
        ' assignment or function call. For example, Math.Sin expects a Double.
        Console.WriteLine(Math.Sin(n))
    End Sub

End Module

To run the program, put the code in a file named ConstantsExample.vb and use the following commands to compile and run it.

vbc ConstantsExample.vb
ConstantsExample.exe

Here is the expected output:

constant
6E+11
600000000000
-0.28470407323754404

Now that we can run and build basic Visual Basic .NET programs, let’s learn more about the language.

Variables in Visual Basic .NET

For in Visual Basic .NET

Learn X By Example

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Constants in Visual Basic .NET