分类统计.frm

蒋加伏主编VB程序设计第四版PPT及全部课本源码 北京邮电大学出版社 Visual Basic 程序设计教程（第四版） 主编 蒋加伏 张林峰 找了好久的（不带密码的）

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "例[7-9] 分类统计"
   ClientHeight    =   2715
   ClientLeft      =   45
   ClientTop       =   330
   ClientWidth     =   3975
   LinkTopic       =   "Form1"
   ScaleHeight     =   2715
   ScaleWidth      =   3975
   StartUpPosition =   3  '窗口缺省
   Begin VB.Frame Frame1 
      Caption         =   "统计各分数段人数"
      Height          =   2412
      Left            =   120
      TabIndex        =   0
      Top             =   120
      Width           =   3612
      Begin VB.ListBox List1 
         Height          =   1320
         ItemData        =   "分类统计.frx":0000
         Left            =   120
         List            =   "分类统计.frx":0002
         TabIndex        =   3
         Top             =   720
         Width           =   3372
      End
      Begin VB.CommandButton Command1 
         Caption         =   "输入数据"
         Height          =   372
         Left            =   120
         TabIndex        =   1
         Top             =   240
         Width           =   1212
      End
      Begin VB.Label Label1 
         Height          =   372
         Left            =   1800
         TabIndex        =   2
         Top             =   240
         Width           =   1572
      End
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim a(10) As Integer

Private Sub Command1_Click()
Dim i As Integer, p As Integer, n As Integer
Dim x As Single
n = InputBox("n=", "请输入学生数")
Label1.Caption = "共有人数：" & n
For i = 1 To n
  x = Val(InputBox("请输入第" & Str(i) & "名学生的成绩：", ""))
  If x >= 0 And x <= 100 Then
    p = Int(x / 10)
    a(p) = a(p) + 1
  Else
    MsgBox "请输入正确分数！"
    i = i - 1
  End If
Next i
For p = 0 To 9
  List1.AddItem (p * 10 & "~" & (p * 10 + 9) & "分的人数为：" & a(p))
Next p
List1.AddItem ("100分的人数为：" & a(10))
End Sub