[填空题] Sub subl(x As Single, ByVal y As Single) t=x x=t/y y=t Mod y End Sub Private Sub Form

[填空题] Sub subl(x As Single, ByVal y As Single)

t=x

x=t/y

y=t Mod y

End Sub

Private Sub Form_Click()

Dim a As Single

Dim b As Single

a=5

b=4

sub1 a,b

Print "a="；a，"b="；b

End Sub

程序运行后，单击命令按钮，则a= (6) ，b= (7) 。

D

sub1子过程中，x默认为地址传递，y被定义为传值传递，即y值的变动不会改变原来变量的值，所以Form_Click中b的值保持4不变。传入"a=5，b=4"。t=5，x=5/4，故x=1.25；y=5%4，故y=1。最后结果为a=1.25，b=4。