Imports System

Imports Microsoft.VisualBasic 'this isn't needed if you are using Visual Studio

​

​

Public Module Module1

    Public Sub Main()

        dim location as integer

        dim startString as string = "Hello World"

        location = instr(startString, "W")

        Console.WriteLine(location)

        location = instr(startString,".com") 

    End Sub

End Module

​

'TASKS

'1. Figure out what this is doing.  Try changing the W in line 10 to other letters

'2. Assuming you have fgured out this does, what is the issue if you put the letter o instead of W in Line 10?

'3. Can you use instr to figure out if someone enters a valid email address?  By valid I mean includes an @ (simplistic I know!)