单项选择题下列说法错误的是
单项选择题有如下程序: Private Sub Commandl_Click() Dim a As Single Dim b As Single a=2:b=4 Call CS(a,b) End Sub Sub CS(x As Single,y As Single) t=X x=t y y=t Mod y End Sub 程序运行后,单击命令按钮,a和b的值分别为