Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        '1. Input: Get Number of Diskettes being sold
        Dim diskettes, cost As Double
        diskettes = CDbl(InputBox("Enter number of diskettes being purchased."))


        '2. Calculate: Compute number of diskettes sold at certain price
        cost = diskettes * 0.25

        If (cost > 99) Then
            cost = diskettes * 0.2
        End If


        '3. Display: Show cost of diskettes
        txtoutput.Text = "The cost of the diskettes being purchased is " & FormatCurrency(cost)



    End Sub
End Class



















<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form

    'Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        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.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.Button1 = New System.Windows.Forms.Button
        Me.txtoutput = New System.Windows.Forms.TextBox
        Me.Label1 = New System.Windows.Forms.Label
        Me.SuspendLayout()
        '
        'Button1
        '
        Me.Button1.BackColor = System.Drawing.Color.White
        Me.Button1.Font = New System.Drawing.Font("Arial Black", 12.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Button1.ForeColor = System.Drawing.Color.FromArgb(CType(CType(30, Byte), Integer), CType(CType(135, Byte), Integer), CType(CType(185, Byte), Integer))
        Me.Button1.Location = New System.Drawing.Point(152, 104)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(157, 64)
        Me.Button1.TabIndex = 0
        Me.Button1.Text = "Push Me"
        Me.Button1.UseVisualStyleBackColor = False
        '
        'txtoutput
        '
        Me.txtoutput.Location = New System.Drawing.Point(25, 219)
        Me.txtoutput.Name = "txtoutput"
        Me.txtoutput.Size = New System.Drawing.Size(419, 20)
        Me.txtoutput.TabIndex = 1
        '
        'Label1
        '
        Me.Label1.AutoSize = True
        Me.Label1.Font = New System.Drawing.Font("Arial Black", 15.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label1.Location = New System.Drawing.Point(175, 186)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(106, 30)
        Me.Label1.TabIndex = 2
        Me.Label1.Text = "Answer:"
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.BackColor = System.Drawing.Color.FromArgb(CType(CType(53, Byte), Integer), CType(CType(154, Byte), Integer), CType(CType(172, Byte), Integer))
        Me.ClientSize = New System.Drawing.Size(489, 374)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.txtoutput)
        Me.Controls.Add(Me.Button1)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents txtoutput As System.Windows.Forms.TextBox
    Friend WithEvents Label1 As System.Windows.Forms.Label

End Class