在窗体上添加一个命令按钮Command1和两个名称分别为Label1和Label2的标签,在通用声明段声明变量X,并编写如下事件过程和Sub过程: Private x As Integer Private Sub Command1_Click() x = 5: y = 3 Call proc(x, y) Label1.Caption = x Label2.Caption = y End Sub Sub proc(ByVal a As Integer, ByVal b As Integer) x = a * a y = b + b End Sub 程序运行后,单击命令按钮,则两个标签中显示的内容分别是( )。