執行下列 VB 程式,當按下命令鈕後結果將印出何值? Private Sub Button1_Click() Handles Button1.Click Dim a, b As Integer a=3:b=8 a=a+b b=b-a Call LBS(a, b) MsgBox(a-b) End Sub Private Sub LBS(ByRef x, ByVal y) Dim T As Integer T=x:x=y:y=T End Sub

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