What numbers will be displayed in the list box by the following code when the button is clicked?
Private Sub btnDisplay_Click(...) Handles btnDisplay.Click
Dim num As Integer = 7
Do
num += 1
lstBox.Items.Add(num)
Loop Until (num 6)
lstBox.Items.Add(num)
End Sub
A) 7
B) 8
C) 7 and 8
D) 8 and 8

Question

What numbers will be displayed in the list box by the following code when the button is clicked? 
Private Sub btnDisplay_Click(...) Handles btnDisplay.Click 
Dim num As Integer = 7 
Do 
num += 1 
lstBox.Items.Add(num) 
Loop Until (num > 6) 
lstBox.Items.Add(num) 
End Sub
A) 7
B) 8
C) 7 and 8
D) 8 and 8

Quizplus · Accepted Answer

The loop increments `num` starting from 7, adds 1 to it making it 8, and adds 8 to the list. The condition `(num > 6)` is immediately true after the first increment, so the loop exits after one iteration. The same value of `num` (which is 8) is then added to the list again outside the loop, resulting in "8 and 8" being displayed.

What Numbers Will Be Displayed in the List Box by the Following