若有如下sub过程: Sub sfun(x As Single, y As Single) t=x x=t/y y=t Mod y End Sub 在窗体中添加个命令按钮command33,对应的事件过程如下: Private Sub Command33_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,消息框中有两行输出,内容分别为( )。