设有如下程序Private Sub Fom1_Click() Dim s As Integer,b As Integer a=20:b=50 p1 a,b p2 a,b p3 a,b Print"a=";a,"b=";b End SubSub pl(x As Integer,ByValy As Integer) x=x+10 y=y+20End SubSub p2(ByVal x As Inte
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设有如下程序Private Sub Fom1_Click() Dim s As Integer,b As Integer a=20:b=50 p1 a,b p2 a,b p3 a,b Print"a=";a,"b=";b End SubSub pl(x As Integer,ByValy As Integer) x=x+10 y=y+20End SubSub p2(ByVal x As Inte