Imports System

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Public Module Module1

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    Public Sub Main() 'add print statements in main

        dim n as integer

        console.writeline("hi")

        Validate_Num(n)

    End Sub

​

    Public function Validate_Num(n as integer) 'functions returns values, can dim as boolean to do true or false

        console.writeline("enter a number")

        n = console.readline()

        if n >= 0 then

            console.writeline("True")

        else

            console.writeline("False")

        end if

        return n 'this removes an error even though ity still "works" without it

    end function

End Module

'functions are used to reuse code in another part of the program

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