(1)在设计程序界面时,要清空文本框中的显示内容,应修改该文本框中的 属性。
(2)实现上述功能的VB程序如下,请在划线处填入合适代码。
Private Sub Command1_Click()
Dim a As Integer, s As String
Dim n As Integer, t As Integer, v As Integer
n = Val(Text1.Text)
t = 0
s = ""
Do While n > 0
a =" n" Mod 2
n =" n" \ 2
t = ①
s =" Str(a)" + s
Loop
v =" t" Mod 2
Text2.Text = s
Label3.Caption = "校验位值:" + ②
End Sub
(3)运行该程序,在文本框Text1中输入22,单击“计算”按钮,则显示的校验位值是 。
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2