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ParameterMysterySection2

Language/Type: VB parameters return

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

Public Module ParameterMysterySection2
    Public Sub Main()
        Dim a As Integer = 137
        Dim b As Integer = 42

        Console.WriteLine("a = " & a)
        Foo(b)
        Console.WriteLine("a = " & a)
        Console.WriteLine("b = " & b)

        a = Bar(b, a + b)  
        Console.WriteLine("a = " & a)
        a = Bar(a, b)  
        Console.WriteLine("a = " & a)
    End Sub

    Public Sub Foo(a As Integer)
        Console.WriteLine("a = " & a)
        a = 160
    End Sub

    Public Function Bar(c As Integer, b As Integer)
        Dim d As Integer = b - c
        Console.WriteLine("d = " & d)
        Return d Mod 10
    End Function
End Module
line 1
line 2
line 3
line 4
line 5
line 6
line 7
line 8

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