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For each of the following Visual Basic code snippets, identify the syntax error.

1. If intX > 100

lblResult. Text = "Invalid Data"

End If

2. Dim str As String = "Hello"

Dim intLength As Integer

intLength = Length (str)

3. If intZ < 10 Then

lblResult. Text = "Invalid Data"

4. Dim str As String = "123"

If str. IsNumeric Then

lblResult. Text = "It is a number."

End If

5. Select Case intX

Case < 0

lblResult. Text = "Value too low."

Case > 100

lblResult. Text = "Value too high."

Case Else

lblResult. Text = "Value just right."

End Select

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Answers (1)
  1. 22 May, 17:48
    0
    1. No 'Then' in the if statement

    2. No syntax error.

    3. No closing if statement that is no "END IF"

    4. No syntax error

    5. No syntax error

    Explanation:

    1. The syntax for writing if statement in visual basic is:

    If condition Then

    'Stament block'

    End If

    From the above syntax, we see that the "Then" keyword is missing in the snippet.

    2. This is okay as there is no syntax error.

    str was declared as a string and a variable was assigned to it. Then, intLength was also declared as integer and the length of str is assigned to it.

    3. The syntax for writing if statement in visual basic is:

    If condition Then

    'Stament block'

    End If

    From the above we can see that "End If" is missing in the given snippet.

    4. There is no syntax error. The opening if and ending if are present.

    5. There is no syntax error. The general form of writing a select case statement in Visual basic is:

    Select Case VariableName

    Case 1

    "Statement to execute"

    Case 2

    "Statement to execute"

    Case Else

    "Default Statement to execute if other case fail"

    End Select
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