[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_Cli

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[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)

参考答案:

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。

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