1. Arrays

2. What is the output of: Private Sub cmdButton_Click() Dim i As Integer, a(1 To 4) As integer Open "DATA.TXT" For Input As #1 For i = 1 To 4 Input #1, a(i) Next i For i = 4 To 1 Step -2 picBox.Print a(i); Next i End Sub Contents of DATA.TXT: 1,3,5,7

3. Output: 7 3

4. What is the output of: Private Sub cmdButton_Click() Dim i As Integer, a(9) As integer Open "DATA.TXT" For Input As #1 do while not EOF(1) Input #1, x a(x) = x Loop For i = 4 To 9 sum = sum + a(i); Next i Print sum End Sub Contents of DATA.TXT: 1,5,3,7

5. Output: 12

6. What is the output of: Dim a(2 To 9) As Integer, i As Integer, _ k As Integer, sum As Integer For i = 2 To 9 a(i) = i Next i sum = 0 For k = 4 To 6 sum = sum + 10 ^ a(k-2) Next k picBox.Print sum

7. Output: 111000

8. Private Sub cmdButton_Click() On Error GoTo ErrorHandler Dim Q(2 To 7) As Integer p = 4 k = (p + p) / Q(p) Print p + k Exit Sub ErrorHandler: Q(p) = 2 p = Q(p) Q(p) = 2 Resume End sub

9. Output: 4

10. What is the output of: Dim a(-1 to 5) As Single, x As Single Open "DATA.TXT" For Input As #1 Do While Not EOF(1) Input #1, x a(x) = a(x) + 3 Loop Close #1 picBox.Cls picBox.Print a(0); a(2) Contents of DATA.TXT: 0, 1, 5, 2, 0

11. Output: 6 2

12. Dim a(-2 To 5), b As Integer Dim i As Integer, j As Integer Open "DATA.TXT" For Input As #1 num = 0 For i = 3 To 5 Input #1, a(i) Next i For j = -1 To 1 Input #1, k b = b + a(k) Next j picBox.Print b Contents of DATA.TXT: 2, 1, 0, -1, 3, 3

13. Output: 4