程序代码如下,为实现以上功能,请在划线处填写合适的代码:
Dim jf(800)As Integer,hyh(800)As String,n As Integer
Dim n As Integer '表示会员的总人数
Private Sub Form Load()
'从数据库中读取会员编号和积分,并按积分值从小到大排序,显示在列表框List1中
For i=l To n
List1. AddItem hyh(i)+" "+Str(jf(i))
Next i
End SubPrivate Sub Command1_Click()
Dim i As Integer,j As Integer,m As Integer,k1 As Integer,k2 As Integer
k1=Val(Text1. Text):k2= Val(Text2. Text)
If k1> k2 Then t=k1:k1=k2:k2=t
If k1>jf(n)Or k2 jf(1)Then
List2. AddItem "没有找到该范围的数据!"
Text3. Text="0":Exit Sub
End If
i=l
j=n
Do While i<=j
m=Int((i+j)/2)
If jf(m)>k1 Then
j=m-1
Elself jf(m)<k1 Then
i=m+1
Else
If
j=m-1
Else
p=m
Exit Do
End If
End IF
Loop
If i>j Then p=
k=0
Do While
List2. AddItem hyh(p)+" "+ Str(jf(p))
p=p+1
Loop
Text3. Text=Str(k)
End sub相似题推荐
实现上述功能的VB程序如下:
(1)程序窗体中“查找”按钮的对象名是
(2)加框处代码有误,请改正;
(3)请在划线处填入合适代码。
Const n = 10
Dim a(1 To n) As Integer
Private Sub Form_load()
’获取一组正整数,按升序排列后依次存入
’数组a并显示在文本框Text1中,代码略
End Sub
Private Sub Cmd1_Click()
Dim i As Integer,j As IntegerDim mid1 As Integer, mid2 As Integer
key = Val(Text2.Text)
i = 1 : j = n : flag = False
Do While i <= j And Not flagmid1 = Int(i + (j - i)/ 3)
If key = a(mid1) Or key = a(mid2) Then
flag = True
ElseIf key < a(mid1) Then
ElseIf key > a(mid2) Then
Else
i = mid1 + 1
j = mid2 - 1
End If
Loop
If Then ’改错
ElseIf flag Then
List1.AddItem Str(mid2)
Else
List1.AddItem Str(j) + Str(i)
End If
End Sub【推荐2】气象学上将日平均气温连续 5 天等于或低于 10℃算作入冬。编写 VB 程序, 读取某月每日最高气温与最低气温数据(该月为 30 天,且本月气温最高不超过30℃,最低不低于0℃), 温度以“最高温度~最低温度”的格式显示在列表框 List1 中;单击“统计”按钮Command1判断该月是否已经入冬,并统计得到该月最低日均气温,结果在 Text1 中呈现。程序运行界面如图所示。
(1) 某月 1 号~10 号每日最高气温与最低气温数据如下表所示:日期 | 1 号 | 2 号 | 3 号 | 4 号 | 5 号 | 6 号 | 7 号 | 8 号 | 9 号 | 10 号 |
最高气 温℃~ 最低气 温℃ | 22~14 | 17~12 | 10~4 | 10~2 | 8~1 | 11~8 | 17~5 | 15~4 | 19~7 | 19~7 |
(2) 请在划线处填入合适的代码。
Dim a(1 To 30) As String
Private Sub Form_Load()
‘读取本月每日气温数据,存储于数组 a 中并在列表框 List1 中显示,过程略。
End Sub
Private Sub Command1_Click()
Dim temp(1 To 60) As Integer
Dim length As Integer, t As Integer, j As Integer
Dim ave As Single
Dim f(30) As Integer
Dim flag As Boolean
For i = 1 To 30
length = Len(a(i))
j = 1: t = 1
Do While j <= length
If Not (Mid(a(i), j, 1) <= "9" And Mid(a(i), j, 1) >= "0") Then
temp(2 * i - 1) = Val(Mid(a(i), t, j - t))
End If
j = j + 1
Loop
temp(2 * i) = Val(Mid(a(i), t, j - t))
Next if(0) = 0: low = 30: flag = False
For i = 1 To 30
ave = (temp(i * 2 - 1) + temp(i * 2)) / 2
If ave < low Then low = ave
If Not flag Then
If ave <= 10 Then
Else
f(i) = 0
End If
If f(i) = 5 Then
Text1.Text = "本月已入冬"
flag = True
End If
End If
Next iIf
Text1.Text = Text1.Text + " " + "本月日均气温最低为: " + Str(low)
End Sub
(1)根据程序代码分析,“加密”按钮的名称是
(2)根据加密规则明文“9G78fbY5”,则密文为
(3)请在划线处填入合适的代码:
Private Sub Com_jm_Click()
Dim x As String, ch As String, cl As String
Dim sl As String, s2 As String, s As String
Dim i As Integer, n As Integer, y As Integer
x=Text1.Text
n=Len(x)
For i=1 To n
ch=Vid(x, i, 1)
If ch>= "0" And ch<= "9" Then
①
s2=s2 & Str(y)
Elself ch>= "a" And ch<=" z" Then
y=(Asc(ch)-Asc("a")+3) Mod 26
②
s1=c1+s1
Else
y=(Asc(ch)-Asc("A")+3) Mod 26
c2=Chr(Asc("A")+y)
s1=c2+sl
End If
Next i③
Text2.Text=s
End Sub