What will be displayed by the following program when the button is clicked? Private Sub btnDisplay_Click(...) Handles btnDisplay.Click
Dim a As String, n, c As Integer
a = "HIGHBACK"
n = CInt(Int)
c = 0
For k As Integer = 0 To n - 1
If a.Substring(k, 1) a.Substring(7 - k, 1) Then
c += 1
End If
Next
txtBox.Text = CStr(c)
End Sub
A) 1
B) 2
C) 3
D) 4
E) 5

Question

What will be displayed by the following program when the button is clicked? Private Sub btnDisplay_Click(...) Handles btnDisplay.Click 
Dim a As String, n, c As Integer 
a = "HIGHBACK" 
n = CInt(Int) 
c = 0 
For k As Integer = 0 To n - 1
If a.Substring(k, 1) > a.Substring(7 - k, 1) Then 
c += 1 
End If 
Next 
txtBox.Text = CStr(c)
 End Sub
A) 1
B) 2
C) 3
D) 4
E) 5

Quizplus · Accepted Answer

The program compares the characters of the string "HIGHBACK" at corresponding positions from both ends. If the character on the left side is greater than the character on the right side, it increments the counter variable c by 1. The loop runs n-1 times where n is an integer value (which is not defined in the code and will cause an error), so it will depend on the value entered at runtime. However, even with any value of n, the comparison will only be made for the first 4 characters from both ends (i.e. H vs K, I vs C, G vs A, H vs B) as the loop only runs for n-1 times. Out of these 4 comparisons, only 3 pairs satisfy the condition where the left character is greater than the right, so the value of c will be 3 which will be displayed in the text box.

What Will Be Displayed by the Following Program When the Button