填空题

在窗体中添加一个命令按钮cmd和一个文本框txt,然后编写如下事件过程: Private Sub cmd_click( ) Dim x As Integer, y As Integer, z As Integer x=5 y=7 z=0 Me! Txt="" Call p(x,y,z) Me! txt=z End Sub Sub p(a As Integer, b As Integer, e As Integer) c=a+b End Sub 单击按钮,文本框显示的内容是 【12】

【参考答案】

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