设有如下程序: Prirate Sub Form_Click() Dim a As Integer,b AS Integer a=20:b=50 p1 a,b p2 a,b p3 a,b Print"a=";a,"b=";b End Sub Sub p1(x As Integeh By Val y As Integer) x=x+10 y=y+20 End Sub Sub p2(ByVal x A
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设有如下程序: Prirate Sub Form_Click() Dim a As Integer,b AS Integer a=20:b=50 p1 a,b p2 a,b p3 a,b Print"a=";a,"b=";b End Sub Sub p1(x As Integeh By Val y As Integer) x=x+10 y=y+20 End Sub Sub p2(ByVal x A