Question

This is a code. In words how can I describe this?

This is the code.

Private Sub btnDisplay_Click(...) Handles btnDisplay.Click
  Dim word As String = "courage"
  Dim letter As String = ""
  Dim numVowels As Integer = 0
  For i 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 Boolean
  letter = letter.ToUpper
  If (letter = "A") Or (letter = "E") Or (letter = "I") Or
     (letter = "O") Or (letter = "U") Then
    Return True
  Else
    Return False
  End If
End Function

Answer 1

1.) Private: It is a keyword used to specify the scope. It is an access specifier.

2.) Sub: A keyword that defines a SubRoutine.

3.) btnDisplay_Click(..): It is the name of the subroutine which will be called when you will press the button.

4.) Handles: It is used to define which event will be handled by a particular subroutine.

5.) In this particular case, the subroutine is going to handle the click event.

6.) Dim shorts for Dimension is used to declare a variable.

7.) As: It is a keyword which allows us to define the type of variable.

 Dim word As String = "courage"

So, this particular code will declare a variable called word as a string. And "courage" will be assigned to it.

Thank You.