![](https://lstatic.shangxueba.com/sxbzda/h5/images/m_q_title.png)
下面程序:Private Sub Form_Click()Dim x,y,z As Integerx=5y=7z=0Call P1(x,y,z)Print Str(z)En
下面程序:
Private Sub Form_Click()
Dim x,y,z As Integer
x=5
y=7
z=0
Call P1(x,y,z)
Print Str(z)
End Sub
Sub P1(ByVal a As Integer, ByVal b As Integer, c As integer)
c=a+b
End Sub
运行后的输出结果为
A.0
B.12
C.Str(z)
D.显示错误信息
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)