This program you are supposed to enter the amount owed the amount of money paid and get the change due. then take the change and tell the used how many dollars, quarters, dimes, nickels, and pennies due in change. i can not figure out where my calculations went wrong. Does anyone have any ideas?????
here is the code as i programmed it.

Public Class ChangeForm
    Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    Friend WithEvents TitleLabel As System.Windows.Forms.Label
    Friend WithEvents AmountOwedLabel As System.Windows.Forms.Label
    Friend WithEvents ChangeDueLabel As System.Windows.Forms.Label
    Friend WithEvents AmountOwedTextBox As System.Windows.Forms.TextBox
    Friend WithEvents ChangeDueTextBox As System.Windows.Forms.TextBox
    Friend WithEvents DollarsIdLabel As System.Windows.Forms.Label
    Friend WithEvents QuartersIdLabel As System.Windows.Forms.Label
    Friend WithEvents DimesIdLabel As System.Windows.Forms.Label
    Friend WithEvents NickelIdLabel As System.Windows.Forms.Label
    Friend WithEvents PenniesIdLabel As System.Windows.Forms.Label
    Friend WithEvents QuarterTextLabel As System.Windows.Forms.Label
    Friend WithEvents DimesTextLabel As System.Windows.Forms.Label
    Friend WithEvents NickelTextLabel As System.Windows.Forms.Label
    Friend WithEvents PenniesTextLabel As System.Windows.Forms.Label
    Friend WithEvents ExitButton As System.Windows.Forms.Button
    Friend WithEvents calculateButton As System.Windows.Forms.Button
    Friend WithEvents ClearButton As System.Windows.Forms.Button
    Friend WithEvents DollarTextLabel As System.Windows.Forms.Label
    Friend WithEvents AmountPaidLabel As System.Windows.Forms.Label
    Friend WithEvents AmountPaidTextBox As System.Windows.Forms.TextBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.TitleLabel = New System.Windows.Forms.Label
        Me.AmountOwedLabel = New System.Windows.Forms.Label
        Me.ChangeDueLabel = New System.Windows.Forms.Label
        Me.AmountOwedTextBox = New System.Windows.Forms.TextBox
        Me.ChangeDueTextBox = New System.Windows.Forms.TextBox
        Me.DollarsIdLabel = New System.Windows.Forms.Label
        Me.QuartersIdLabel = New System.Windows.Forms.Label
        Me.DimesIdLabel = New System.Windows.Forms.Label
        Me.NickelIdLabel = New System.Windows.Forms.Label
        Me.PenniesIdLabel = New System.Windows.Forms.Label
        Me.DollarTextLabel = New System.Windows.Forms.Label
        Me.QuarterTextLabel = New System.Windows.Forms.Label
        Me.DimesTextLabel = New System.Windows.Forms.Label
        Me.NickelTextLabel = New System.Windows.Forms.Label
        Me.PenniesTextLabel = New System.Windows.Forms.Label
        Me.ExitButton = New System.Windows.Forms.Button
        Me.calculateButton = New System.Windows.Forms.Button
        Me.ClearButton = New System.Windows.Forms.Button
        Me.AmountPaidLabel = New System.Windows.Forms.Label
        Me.AmountPaidTextBox = New System.Windows.Forms.TextBox
        Me.SuspendLayout()
        '
        'TitleLabel
        '
        Me.TitleLabel.AutoSize = True
        Me.TitleLabel.Location = New System.Drawing.Point(184, 8)
        Me.TitleLabel.Name = "TitleLabel"
        Me.TitleLabel.Size = New System.Drawing.Size(57, 21)
        Me.TitleLabel.TabIndex = 0
        Me.TitleLabel.Text = "Change"
        '
        'AmountOwedLabel
        '
        Me.AmountOwedLabel.AutoSize = True
        Me.AmountOwedLabel.Location = New System.Drawing.Point(16, 40)
        Me.AmountOwedLabel.Name = "AmountOwedLabel"
        Me.AmountOwedLabel.Size = New System.Drawing.Size(109, 21)
        Me.AmountOwedLabel.TabIndex = 1
        Me.AmountOwedLabel.Text = "Amount Owed:"
        '
        'ChangeDueLabel
        '
        Me.ChangeDueLabel.AutoSize = True
        Me.ChangeDueLabel.Location = New System.Drawing.Point(16, 112)
        Me.ChangeDueLabel.Name = "ChangeDueLabel"
        Me.ChangeDueLabel.Size = New System.Drawing.Size(93, 21)
        Me.ChangeDueLabel.TabIndex = 3
        Me.ChangeDueLabel.Text = "C&hange Due:"
        '
        'AmountOwedTextBox
        '
        Me.AmountOwedTextBox.Location = New System.Drawing.Point(128, 40)
        Me.AmountOwedTextBox.Name = "AmountOwedTextBox"
        Me.AmountOwedTextBox.Size = New System.Drawing.Size(72, 25)
        Me.AmountOwedTextBox.TabIndex = 2
        Me.AmountOwedTextBox.Text = ""
        '
        'ChangeDueTextBox
        '
        Me.ChangeDueTextBox.Location = New System.Drawing.Point(128, 112)
        Me.ChangeDueTextBox.Name = "ChangeDueTextBox"
        Me.ChangeDueTextBox.Size = New System.Drawing.Size(72, 25)
        Me.ChangeDueTextBox.TabIndex = 4
        Me.ChangeDueTextBox.Text = ""
        '
        'DollarsIdLabel
        '
        Me.DollarsIdLabel.AutoSize = True
        Me.DollarsIdLabel.Location = New System.Drawing.Point(224, 48)
        Me.DollarsIdLabel.Name = "DollarsIdLabel"
        Me.DollarsIdLabel.Size = New System.Drawing.Size(60, 21)
        Me.DollarsIdLabel.TabIndex = 7
        Me.DollarsIdLabel.Text = "&Dollars:"
        '
        'QuartersIdLabel
        '
        Me.QuartersIdLabel.AutoSize = True
        Me.QuartersIdLabel.Location = New System.Drawing.Point(224, 80)
        Me.QuartersIdLabel.Name = "QuartersIdLabel"
        Me.QuartersIdLabel.Size = New System.Drawing.Size(71, 21)
        Me.QuartersIdLabel.TabIndex = 9
        Me.QuartersIdLabel.Text = "&Quarters:"
        '
        'DimesIdLabel
        '
        Me.DimesIdLabel.AutoSize = True
        Me.DimesIdLabel.Location = New System.Drawing.Point(224, 112)
        Me.DimesIdLabel.Name = "DimesIdLabel"
        Me.DimesIdLabel.Size = New System.Drawing.Size(54, 21)
        Me.DimesIdLabel.TabIndex = 11
        Me.DimesIdLabel.Text = "D&imes:"
        '
        'NickelIdLabel
        '
        Me.NickelIdLabel.AutoSize = True
        Me.NickelIdLabel.Location = New System.Drawing.Point(224, 144)
        Me.NickelIdLabel.Name = "NickelIdLabel"
        Me.NickelIdLabel.Size = New System.Drawing.Size(61, 21)
        Me.NickelIdLabel.TabIndex = 14
        Me.NickelIdLabel.Text = "&Nickels:"
        '
        'PenniesIdLabel
        '
        Me.PenniesIdLabel.AutoSize = True
        Me.PenniesIdLabel.Location = New System.Drawing.Point(224, 176)
        Me.PenniesIdLabel.Name = "PenniesIdLabel"
        Me.PenniesIdLabel.Size = New System.Drawing.Size(64, 21)
        Me.PenniesIdLabel.TabIndex = 16
        Me.PenniesIdLabel.Text = "&Pennies:"
        '
        'DollarTextLabel
        '
        Me.DollarTextLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.DollarTextLabel.Location = New System.Drawing.Point(304, 48)
        Me.DollarTextLabel.Name = "DollarTextLabel"
        Me.DollarTextLabel.Size = New System.Drawing.Size(48, 23)
        Me.DollarTextLabel.TabIndex = 8
        '
        'QuarterTextLabel
        '
        Me.QuarterTextLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.QuarterTextLabel.Location = New System.Drawing.Point(304, 80)
        Me.QuarterTextLabel.Name = "QuarterTextLabel"
        Me.QuarterTextLabel.Size = New System.Drawing.Size(48, 23)
        Me.QuarterTextLabel.TabIndex = 10
        '
        'DimesTextLabel
        '
        Me.DimesTextLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.DimesTextLabel.Location = New System.Drawing.Point(304, 112)
        Me.DimesTextLabel.Name = "DimesTextLabel"
        Me.DimesTextLabel.Size = New System.Drawing.Size(48, 23)
        Me.DimesTextLabel.TabIndex = 12
        '
        'NickelTextLabel
        '
        Me.NickelTextLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.NickelTextLabel.Location = New System.Drawing.Point(304, 144)
        Me.NickelTextLabel.Name = "NickelTextLabel"
        Me.NickelTextLabel.Size = New System.Drawing.Size(48, 23)
        Me.NickelTextLabel.TabIndex = 15
        '
        'PenniesTextLabel
        '
        Me.PenniesTextLabel.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.PenniesTextLabel.Location = New System.Drawing.Point(304, 176)
        Me.PenniesTextLabel.Name = "PenniesTextLabel"
        Me.PenniesTextLabel.Size = New System.Drawing.Size(48, 23)
        Me.PenniesTextLabel.TabIndex = 17
        '
        'ExitButton
        '
        Me.ExitButton.Location = New System.Drawing.Point(344, 224)
        Me.ExitButton.Name = "ExitButton"
        Me.ExitButton.Size = New System.Drawing.Size(88, 32)
        Me.ExitButton.TabIndex = 6
        Me.ExitButton.Text = "E&xit"
        '
        'calculateButton
        '
        Me.calculateButton.Location = New System.Drawing.Point(24, 224)
        Me.calculateButton.Name = "calculateButton"
        Me.calculateButton.Size = New System.Drawing.Size(88, 32)
        Me.calculateButton.TabIndex = 4
        Me.calculateButton.Text = "Calculate"
        '
        'ClearButton
        '
        Me.ClearButton.Location = New System.Drawing.Point(188, 224)
        Me.ClearButton.Name = "ClearButton"
        Me.ClearButton.Size = New System.Drawing.Size(88, 32)
        Me.ClearButton.TabIndex = 5
        Me.ClearButton.Text = "C&lear"
        '
        'AmountPaidLabel
        '
        Me.AmountPaidLabel.AutoSize = True
        Me.AmountPaidLabel.Location = New System.Drawing.Point(16, 76)
        Me.AmountPaidLabel.Name = "AmountPaidLabel"
        Me.AmountPaidLabel.TabIndex = 18
        Me.AmountPaidLabel.Text = "Amount Paid:"
        '
        'AmountPaidTextBox
        '
        Me.AmountPaidTextBox.Location = New System.Drawing.Point(128, 76)
        Me.AmountPaidTextBox.Name = "AmountPaidTextBox"
        Me.AmountPaidTextBox.Size = New System.Drawing.Size(72, 25)
        Me.AmountPaidTextBox.TabIndex = 19
        Me.AmountPaidTextBox.Text = ""
        '
        'ChangeForm
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(7, 18)
        Me.ClientSize = New System.Drawing.Size(456, 266)
        Me.ControlBox = False
        Me.Controls.Add(Me.AmountPaidTextBox)
        Me.Controls.Add(Me.AmountPaidLabel)
        Me.Controls.Add(Me.ClearButton)
        Me.Controls.Add(Me.calculateButton)
        Me.Controls.Add(Me.ExitButton)
        Me.Controls.Add(Me.PenniesTextLabel)
        Me.Controls.Add(Me.NickelTextLabel)
        Me.Controls.Add(Me.DimesTextLabel)
        Me.Controls.Add(Me.QuarterTextLabel)
        Me.Controls.Add(Me.DollarTextLabel)
        Me.Controls.Add(Me.PenniesIdLabel)
        Me.Controls.Add(Me.NickelIdLabel)
        Me.Controls.Add(Me.DimesIdLabel)
        Me.Controls.Add(Me.QuartersIdLabel)
        Me.Controls.Add(Me.DollarsIdLabel)
        Me.Controls.Add(Me.ChangeDueTextBox)
        Me.Controls.Add(Me.AmountOwedTextBox)
        Me.Controls.Add(Me.ChangeDueLabel)
        Me.Controls.Add(Me.AmountOwedLabel)
        Me.Controls.Add(Me.TitleLabel)
        Me.Font = New System.Drawing.Font("Georgia", 11.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Name = "ChangeForm"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub TitleLabel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TitleLabel.Click

    End Sub

    Private Sub DimesTextLabel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DimesTextLabel.Click

    End Sub

    Private Sub ChangeForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub

    Private Sub PenniesTextLabel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PenniesTextLabel.Click

    End Sub

    Private Sub QuarterTextLabel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles QuarterTextLabel.Click

    End Sub

    Private Sub LabelDollarText_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DollarTextLabel.Click

    End Sub

    Private Sub NickelTextLabel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NickelTextLabel.Click

    End Sub

    Private Sub ChangeDueLabel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ChangeDueLabel.Click

    End Sub

    Private Sub DollarsIdLabel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DollarsIdLabel.Click

    End Sub

    Private Sub ExitButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles ExitButton.Click
        Me.Close()

    End Sub

    Private Sub calculateButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles calculateButton.Click
        Dim intOwed, intPaid, intDue, intD, intQ, intI, intN, intP As Integer
        intOwed = Val(Me.AmountOwedTextBox.Text)
        intDue = Val(Me.ChangeDueTextBox.Text)
        intD = Val(Me.DollarTextLabel.Text)
        intQ = Val(Me.QuarterTextLabel.Text)
        intI = Val(Me.DimesTextLabel.Text)
        intN = Val(Me.NickelTextLabel.Text)
        intP = Val(Me.PenniesTextLabel.Text)
        intPaid = Val(Me.AmountPaidTextBox.Text)
        intDue = intOwed - intPaid
        intD = intDue / 100
        intQ = intDue / 25
        intI = intDue / 10
        intN = intDue / 5
        intP = intDue / 1
        Me.AmountOwedTextBox.Text = intOwed
        Me.AmountPaidTextBox.Text = intPaid
        Me.ChangeDueTextBox.Text = intDue
        Me.DollarTextLabel.Text = intD
        Me.QuarterTextLabel.Text = intQ
        Me.DimesTextLabel.Text = intI
        Me.NickelTextLabel.Text = intN
        Me.PenniesTextLabel.Text = intP
        Me.PenniesTextLabel.Text = Format(Me.PenniesTextLabel.Text, "currency")
        Me.QuarterTextLabel.Text = Format(Me.QuarterTextLabel.Text, "currency")
        Me.DimesTextLabel.Text = Format(Me.DimesTextLabel.Text, "currency")
        Me.DollarTextLabel.Text = Format(Me.DollarTextLabel.Text, "currency")
        Me.NickelTextLabel.Text = Format(Me.NickelTextLabel.Text, "currency")
        Me.AmountPaidTextBox.Text = Format(Me.AmountPaidTextBox.Text, "currency")
        Me.AmountOwedTextBox.Text = Format(Me.AmountOwedTextBox.Text, "currency")
        Me.ChangeDueTextBox.Text = Format(Me.ChangeDueTextBox.Text, "currency")





    End Sub

    Private Sub ClearButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles ClearButton.Click
        Me.AmountOwedTextBox.Text = ""
        Me.AmountPaidTextBox.Text = ""
        Me.ChangeDueTextBox.Text = ""
        Me.DollarTextLabel.Text = ""
        Me.DimesTextLabel.Text = ""
        Me.QuarterTextLabel.Text = ""
        Me.NickelTextLabel.Text = ""
        Me.PenniesTextLabel.Text = ""
        Me.AmountOwedTextBox.Focus()

    End Sub
End Class

Recommended Answers

All 6 Replies

just post the code that you write..don't post the generated code by vb.net and please use code tags.
so what the effort of your program?

This program you are supposed to enter the amount owed the amount of money paid and get the change due. then take the change and tell the used how many dollars, quarters, dimes, nickels, and pennies due in change. i can not figure out where my calculations went wrong. Does anyone have any ideas?????
here is the code as i programmed it.

Private Sub calculateButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles calculateButton.Click
Dim intOwed, intPaid, intDue, intD, intQ, intI, intN, intP As Integer
intOwed = Val(Me.AmountOwedTextBox.Text)
intDue = Val(Me.ChangeDueTextBox.Text)
intD = Val(Me.DollarTextLabel.Text)
intQ = Val(Me.QuarterTextLabel.Text)
intI = Val(Me.DimesTextLabel.Text)
intN = Val(Me.NickelTextLabel.Text)
intP = Val(Me.PenniesTextLabel.Text)
intPaid = Val(Me.AmountPaidTextBox.Text)
intDue = intOwed - intPaid
intD = intDue / 100
intQ = intDue / 25
intI = intDue / 10
intN = intDue / 5
intP = intDue / 1Me.AmountOwedTextBox.Text = intOwed
Me.AmountPaidTextBox.Text = intPaid
Me.ChangeDueTextBox.Text = intDue
Me.DollarTextLabel.Text = intD
Me.QuarterTextLabel.Text = intQ
Me.DimesTextLabel.Text = intI
Me.NickelTextLabel.Text = intN
Me.PenniesTextLabel.Text = intP
Me.PenniesTextLabel.Text = Format(Me.PenniesTextLabel.Text, "currency")
Me.QuarterTextLabel.Text = Format(Me.QuarterTextLabel.Text, "currency")
Me.DimesTextLabel.Text = Format(Me.DimesTextLabel.Text, "currency")
Me.DollarTextLabel.Text = Format(Me.DollarTextLabel.Text, "currency")
Me.NickelTextLabel.Text = Format(Me.NickelTextLabel.Text, "currency")
Me.AmountPaidTextBox.Text = Format(Me.AmountPaidTextBox.Text, "currency")
Me.AmountOwedTextBox.Text = Format(Me.AmountOwedTextBox.Text, "currency")
Me.ChangeDueTextBox.Text = Format(Me.ChangeDueTextBox.Text, "currency")

Narue has a great answer for this one in this thread. Your main problem is you are not decrementing what you count, i.e., once you count dollars, you don't subtract them from the money you have left from which to make change.

I Narue suggestion but it still did not work. maybe i typed some line in error. the resu;lt when calc buttom was clicked was $0.00 in all the change labels here is the text :

Private Sub calculateButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles calculateButton.Click
    Dim intOwed, intPaid, intDue, intD, intQ, intI, intN, intP As Integer
    intOwed = Val(Me.AmountOwedTextBox.Text)
    intDue = Val(Me.ChangeDueTextBox.Text)
    intD = Val(Me.DollarTextLabel.Text)
    intQ = Val(Me.QuarterTextLabel.Text)
    intI = Val(Me.DimesTextLabel.Text)
    intN = Val(Me.NickelTextLabel.Text)
    intP = Val(Me.PenniesTextLabel.Text)
    intPaid = Val(Me.AmountPaidTextBox.Text)
    intDue = intOwed - intPaid
    Do While intDue >= 5
        If intDue >= 100 Then
            intD += 1
            intDue -= 100
        ElseIf intDue >= 25 Then
            intQ += 1
            intDue -= 25
        ElseIf intDue >= 10 Then
            intI += 1
            intDue -= 10
        ElseIf intDue >= 5 Then
            intN += 1
            intDue -= 5
        End If
    Loop
    Me.AmountOwedTextBox.Text = intOwed
    Me.AmountPaidTextBox.Text = intPaid
    Me.ChangeDueTextBox.Text = intDue
    Me.DollarTextLabel.Text = intD
    Me.QuarterTextLabel.Text = intQ
    Me.DimesTextLabel.Text = intI
    Me.NickelTextLabel.Text = intN
    Me.PenniesTextLabel.Text = intP
    Me.PenniesTextLabel.Text = Format(Me.PenniesTextLabel.Text, "currency")
    Me.QuarterTextLabel.Text = Format(Me.QuarterTextLabel.Text, "currency")
    Me.DimesTextLabel.Text = Format(Me.DimesTextLabel.Text, "currency")
    Me.DollarTextLabel.Text = Format(Me.DollarTextLabel.Text, "currency")
    Me.NickelTextLabel.Text = Format(Me.NickelTextLabel.Text, "currency")
    Me.AmountPaidTextBox.Text = Format(Me.AmountPaidTextBox.Text, "currency")
    Me.AmountOwedTextBox.Text = Format(Me.AmountOwedTextBox.Text, "currency")
    Me.ChangeDueTextBox.Text = Format(Me.ChangeDueTextBox.Text, "currency")

does anyone else have any ideas where i went wrong

OK, you have a number of problems:

First, you should not use integers for money math, it looks plain strange.

Dim intOwed, intPaid, intDue, intD, intQ, intI, intN, intP As Integer

should be

Dim intOwed, intPaid, intDue, intD, intQ, intI, intN, intP As Integer

Second, your main calculation is backwards:

intDue = intOwed - intPaid

should be:

intDue = intPaid- intOwed

and here is why: Say you owe $51.06 and you pay $55.00. As you have coded it you will get a Due value of -3.94, not $3.94, which I assume is what you want. Once you fix this you have the third issue:

Do While intDue >= 5

should be:

Do While intDue >= .05

Or you need to multiply indue by 100:

intDue *= 100
Do While intDue >= 5

Fourth, the change amount results do not need to be formated as currency as they are counts, so comment those out:

' Me.PenniesTextLabel.Text = Format(Me.PenniesTextLabel.Text, "currency")
   ' Me.QuarterTextLabel.Text = Format(Me.QuarterTextLabel.Text, "currency")
   ' Me.DimesTextLabel.Text = Format(Me.DimesTextLabel.Text, "currency")
   ' Me.DollarTextLabel.Text = Format(Me.DollarTextLabel.Text, "currency")
   ' Me.NickelTextLabel.Text = Format(Me.NickelTextLabel.Text, "currency")

Fifth, you destroy the original change value and then try to display it:

Me.ChangeDueTextBox.Text = intDue

will show you the pennies, not the change that was due.

TheChange = intDue
intDue *= 100
Do While intDue >= 5
.
.
.
Me.ChangeDueTextBox.Text = TheChange

Lastly, you don't put anything into intP, but the value you want is in intDue.

And that should solve this issue.

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