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ParameterMysteryExam5

Language/Type: VB parameters return

The following console program uses parameters and produces four lines of output. What are they? 

Public Module ParameterMysteryExam5
    Public Sub Main()
        Dim a As Integer = 10
        Dim b As Integer = 4
        Dim c As Integer = a + b

        Dim d As Integer = Mystery(a, b, c)
        b -= 1
        c = Mystery(c, d, a)
        Mystery(a, c, b)
        Console.WriteLine(a & " " & b & " " & c & " " & d)
    End Sub

    Public Function Mystery(b As Integer, c As Integer, a As Integer)
        c += 1
        Console.WriteLine(c & " " & a & " " & b)
        Return a + 2
    End Function
End Module
line 1
line 2
line 3
line 4

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