ตัวอย่างโปรแกรมคำนวณหาส่วนลด VCD โดยการสร้างฟังก์ชั่น

Module VCD
Function vcd(ByVal qty As Integer, ByVal member As String) As Decimal
Dim total As Decimal = 0
Dim discount As Decimal = 0
Dim dis As Decimal
If qty >= 5 AndAlso member = "y" Then
dis = 456 * 10 / 100
discount = 456 - dis
total = qty * discount
ElseIf qty < 5 AndAlso member = "y" Then
dis = 456 * 5 / 100
discount = 456 - dis
total = qty * discount
ElseIf qty > 5 AndAlso member = "n" Then
dis = 456 * 5 / 100
discount = 456 - dis
total = qty * discount
Else
discount = 456
total = qty * discount
End If
Console.WriteLine("Discount = " & discount & " baht" & vbCrLf & "Total = " & total & " baht")
End Function
Sub Main()
Dim qty As Integer
Dim member As String
Console.WriteLine("How many VCD(s)?")
qty = Console.ReadLine()
Console.WriteLine("Are you Member? (y/n)")
member = Console.ReadLine()
vcd(qty, member)
End Sub
End Module

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