In Exercises 4 through 10, determine the output displayed in the list box when t
ID: 3713548 • Letter: I
Question
In Exercises 4 through 10, determine the output displayed in the list box when the button is clicked. 4. Private Sub btnDisplay Click (.. .) Handles btnDisplay.Click For countdown As Integer = 10 To 1 Step-1 1stBox.Items.Add (countdown) Next 1stBox.Items.Add ("blastoff") End Sub 6. Private Sub btnDisplav.Clisk (...) Handles btnDisplay.Click For i As Integer =-9 To -1 Step 3 Next End Sub 8. Private Sub btnDisplay Click(...) Handles btnDisplay.Click Dim n As Integer = 3 Dim total As Integer 0 For i As Integer = 1 To n Next txtBox. Text = Çste (total) End Sub 10. Private Sub htnDisplay Chisk (.. .) Handles btnpisplay.Click Dim word As String "courage" Dim letter As String = "" Dim numVowels As Integer - 0 For î As Integer = 0 To (word. Length - 1) Letter - word. Substring (i, 1) If IsVowel (letter) Then numvowels += 1 End If Next txtBox. Text - Cstr (numVowels) End Sub Function IsVowel (letter As string) As Boolearn letter - letter. ToUpper If (letter "A") Or (letter "B") Or (letter "C") Or (letter- "o") or (letter- "U") Then Return True Else Return False End If End FunctionExplanation / Answer
4) From the given program the output would be countdown(10,9,8,7,6,5,4,3,2,1) after adding
the 10 values to countdown it will display "blastoff" once. So in the list box countdown numbers and blastoff
will be displayed.
6) In the list box numbers -9, -6, -3 will be displayed.
8) The total value which is 5 will get displayed in the list box.
10) After executing the above function it will display the number of vowels in the list box which is
4. (o, u, a, e)