VbScript make computer say something error - windows

Question

I have this file that makes a computer say something. I want it to loop with a VbCancel function. I get this error. Code so far:
Do
Dim Message, Speak
Message=InputBox("Enter text","Speak")
Set Speak=CreateObject("sapi.spvoice")
MsgBox ("You entered: " & Speak)
Speak.Speak Message
If Len(Speak) = 0 Then
MyMessageBox = MsgBox("Click Yes if you mean to Cancel." & vbCrLf & _
"If you mean to enter a zero length string, click No.", vbYesNo, "DO YOU MEAN TO CANCEL?")
If MyMessageBox = vbYes Then
MsgBox "Operation Cancelled"
Exit Sub
End If
Loop
BTW the error is Invalid exit statement
I'm working on Windows 7

Answer 1

Dim Message, Speak
Do
Message=InputBox("Enter text","Speak")
Set Speak=CreateObject("sapi.spvoice")
MsgBox ("You entered: " & Message)
Speak.Speak Message
If Len(Message) = 0 Then
MyMessageBox = MsgBox("Click Yes if you mean to Cancel." & vbCrLf & _
"If you mean to enter a zero length string, click No.", vbYesNo, "DO YOU MEAN TO CANCEL?")
If MyMessageBox = vbYes Then
MsgBox "Operation Cancelled"
Exit Do
End If
End If
Loop
You had several issues here
Exit Sub is for subroutines. You were trying to exit a Do loop
Speak is an object. I dont know if it has a string property but it is not itself a string. Both Len(Speak) and "You entered: " & Speak has Speak changed to Message.
You were missing an End If
I moved the Dim statements out of the loop. No point recreating the object over and over again.

Answer 2

Dim Message, Speak
Do
Message=InputBox("Enter text","Speak")
Set Speak=CreateObject("sapi.spvoice")
MsgBox ("You entered: " & Message)
Speak.Speak Message
If Len(Message) = 0 Then
MyMessageBox = MsgBox("Click Yes if you mean to Cancel." & vbCrLf & _
"If you mean to enter a zero length string, click No.", vbYesNo, "DO YOU MEAN TO CANCEL?")
If MyMessageBox = vbYes Then
MsgBox "Operation Cancelled"
Exit Do
End If
End If
Loop