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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
' display the contents of the students.txt file
' declare variables
Dim inFile As IO.StreamWriter
Dim strStudent As String
' clear previous students from the Students box
lblStudents.Text = String.Empty
' determine whether the file exists
If IO.Exists("students.txt") = True Then
' open the file for input
inFile = IO.File.ReadText("students.txt")
' process loop instructions until end of file
Do Until inFile.Peek -1
' read a student line
strStudent = inFile.ReadLine
' display the student
lblStudents.Text = lblStudents.Text &
strStudent & ControlChars.NewLine
Loop
' close the file
Me.Close()
Else
MessageBox.Show("File not found","Students",
MessageBoxButtons.OK,
MessageBoxIcon.Information)
End If
End Sub
LIFO Inventory Method
Last In, First Out, an accounting method where the most recently acquired items are the first to be sold or used.
Gross Profit
The difference between revenue and the cost of goods sold, indicating how efficiently a company uses labor and supplies in production.
FIFO Method
An inventory valuation method that assumes that the first items produced or purchased are the first used or sold.
Unit Costs Decreasing
A situation indicating that the expense incurred to produce a single unit of output is declining, often due to efficiencies or increased production scale.
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