What is the output of the following program segment?
Dim c As Double
Dim temp As String = IO.File.ReadAllLines("Data1.txt")
Dim n As Integer = temp.Count - 1
Dim a(n) As Double
For i As Integer = 0 To n
a(i) = CDbl(temp(i))
Next
temp = IO.File.ReadAllLines("Data2.txt")
Dim b(n) As Double
For i As Integer = 0 To n
b(i) = CDbl(temp(i))
Next
For k As Integer = 0 To n
If a(k) = b(k) Then
c += 1
End If
Next
lstBox.Items.Add(c)
Assume the twenty rows of the file Data1.txt contain the following entries: 3, 2, 5, 1, 7, 8, 3, 5, 6, 2, 3, 6, 1, 6, 5, 5, 7, 2, 5, 3.
Assume the twenty rows of the file Data2.txt contain the following entries: 5, 3, 3, 4, 8, 2, 3, 5, 9, 5, 3, 7, 3, 7, 6, 3, 2, 1, 3, 4.
A) 2
B) 3
C) 4
D) 5
E) 6

Question

What is the output of the following program segment? 
Dim c As Double 
Dim temp As String = IO.File.ReadAllLines("Data1.txt")
Dim n As Integer = temp.Count - 1 
Dim a(n) As Double 
For i As Integer = 0 To n 
a(i) = CDbl(temp(i)) 
Next 
temp = IO.File.ReadAllLines("Data2.txt") 
Dim b(n) As Double 
For i As Integer = 0 To n 
b(i) = CDbl(temp(i)) 
Next
 For k As Integer = 0 To n 
If a(k) = b(k) Then 
c += 1 
End If
 Next 
lstBox.Items.Add(c) 
Assume the twenty rows of the file Data1.txt contain the following entries: 3, 2, 5, 1, 7, 8, 3, 5, 6, 2, 3, 6, 1, 6, 5, 5, 7, 2, 5, 3. 
Assume the twenty rows of the file Data2.txt contain the following entries: 5, 3, 3, 4, 8, 2, 3, 5, 9, 5, 3, 7, 3, 7, 6, 3, 2, 1, 3, 4.
A) 2
B) 3
C) 4
D) 5
E) 6

Quizplus · Accepted Answer

The program reads the data from two files (Data1.txt and Data2.txt) and stores them in arrays (a and b). The program then compares each element in the arrays, and if they are equal, it increments the variable c. Finally, the value of c is added to a list box.
In this case, only three elements in the arrays are equal: a(3) = b(3) = 1, a(6) = b(6) = 3, and a(16) = b(16) = 2. Therefore, the value of c is 3, and it is the correct output.

What Is the Output of the Following Program Segment