vb

Private Sub Form_Click()
a$ = 2
b$ = 1
Call abcd(a, b, c$, d$)
Print c; d
End Sub


Private Sub abcd(x$, y$, z$, s$)
z = x + y
s = x - y
End Sub


运行结果还是“211” 答案没错 现在搞不懂了