假定有如下的Sub过程: Sub Sfun(x As Single, y As Single) t=x x=t/y y=t Mod y End Sub 在窗体上添加一个命令按钮(名为Command1),然后编写如下事件过程: PriVate Sub Command1_Click() Dim a as single Dim b as single a=5 b=4 sfun a, b MsgBox a & chr(10)+chr(13) & b End Sub 打开窗体运行后,单击命令按钮,消息框的两行输出内容分别为______。