Dim a As Integer
Private Sub Command1_Click()
Timer1.Enabled = True
End Sub
Private Sub Timer1_Timer()
a = a + 1
Image1.Picture = LoadPicture(App.Path & "\" & a & ".jpg")
If a >= 8 Then a = 0
End Sub
单击命令按钮Command1,加框处语句执行的时间间隔为( )
Private Sub Command1_Click()
Dim i As Integer, c As String, s As String, t As String
s = Text1.text
t = ""
For i = 1 To Len(s)
c = Mid(s, i, 1)
If c >= "0" And c <= "9" Then t = t + c
Next i
Text2.text = t
End Sub
运行该程序,在文本框Text1中输入“2016_Student”(不包含引号),单击命令按钮Command1后,文本框Text2中显示的内容是。
Private Sub Command1_Click()
Dim i As Integer, s As Integer ①
s = 0 ②
i = 1
Do While i < 10 ③
i = i + 1
s = s * i ④
Loop
Print s
End Sub
运行该程序,小王单击命令按钮Command1后,出现如第38题图对话框,已知序号①划线处的代码有错误,正确的代码应该是。经过代码修改后,小王重新运行该程序,单击命令按钮Command1,出现的结果是“0”, 那么序号(填①/②/③/④)划线处的代码有错误,正确的代码应该是。
①密码是八位数字,前两位为19
②最后两位数字是91
③能被77和133整除
程序界面如图所示,单击“找回密码”按钮(Command1)后,可能的密码显示在列表框List1中。
解决此问题的相应的程序如下:
Private Sub Command1_Click()
Dim i As Long, s As Long
For i = 0 To 9999
s = ① 's表示该八位数密码
If ② Then '符合密码的条件,s能被77和133整除
List1.AddItem Str(s)
End If
Next i
End Sub
① ②