Problems - Correcting Logic and Code Errors

question 12

Essay

Problems - Correcting Logic and Code Errors
The following sample of code contains errors. Rewrite the incorrect statements to correct all errors.
Private Sub btnDisplay_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnDisplay.Click
' displays type of vehicle for the code entered by user
Const strLENGTH_MSG As String = "The code must contain four characters."
Const strTYPE_MSG As String = "The last character in the code must be C, T, or V."
Dim strCode As String
Dim strLastChar As String
strCode = txtCode.Text.ToLower
' determine whether code contains exactly 4 characters
If strCode.Chars
lblType.Text = String.Empty
MessageBox.Show(strLENGTH_MSG, "Code",
MessageBoxButtons.OK,
MessageBoxIcon.Information)
Else
' determine whether the last character is valid
strLastChar = strCode.Substring(4)
Select Case strCode
Case "C"
lblType.Text = "Car"
Case "T"
lblType.Text = "Truck"
Case "V"
lblType.Text = "Van"
Case Else
lblType.Text = String.Empty
MessageBox.Show(strType_MSG, "Type",
MessageBoxButtons.OK,
MessageBoxIcon.Information)
End If
End If
End Sub

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Definitions:

Epiglottis

A leaf-shaped flap of cartilage located behind the tongue, which closes over the windpipe during swallowing to prevent food from entering the airways.

Nasal Cavity

The interior space of the nose, lined with mucosa, involved in breathing and the olfactory process.

Pharynx

A muscular tube that connects the mouth and nasal passages with the esophagus and larynx, playing a key role in both the respiratory and digestive systems.

Hyperventilates

Excessively rapid or deep breathing, which can lead to a decrease in carbon dioxide in the blood, causing lightheadedness or tingling of the limbs.