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:

Social Traps

Situations where individuals or groups pursue immediate rewards that later prove to have negative or even disastrous consequences.

Overconfidence

The psychological state of being too confident in one’s own abilities, often leading to taking greater risks.

Recycling

The process of converting waste materials into new materials and objects, aiming to reduce consumption of fresh raw materials, energy usage, and environmental pollution.

Commons Dilemmas

A situation where individual interests conflict with the collective interest, often resulting in the overuse or degradation of a common resource.