v6j04-15.frm

简单的VB课程教学课件适合刚刚接触VB学习的学生学习,绝对是这门课程的精化

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "判断素数"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   5640
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   5640
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "使用GoTo语句"
      Height          =   495
      Left            =   4230
      TabIndex        =   1
      Top             =   2040
      Width           =   1275
   End
   Begin VB.CommandButton Command2 
      Caption         =   "使用状态变量"
      Height          =   495
      Left            =   4200
      TabIndex        =   0
      Top             =   2580
      Width           =   1335
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command2_Click()        '        单击命令按钮运行该事件函数
    '使用状态变量
    Dim i As Integer, m As Integer, tag As Boolean
    j = 0
    For m = 2 To 100       '   对100以内的每个数判断其是否为素数
       tag = True
       For i = 2 To m - 1
          If (m Mod i) = 0 Then tag = False   'm能被i整除，该m不是素数
       Next i
       If tag Then
          Print m; "  ";      'm不能被i=2～m-1整除，m是素数，显示
         j = j + 1
         If j = 10 Then j = 0: Print
       End If
    Next m
End Sub

Private Sub Command1_Click()
    '使用GoTo语句
    j = 0
    For m = 2 To 100
        For i = 2 To m - 1
              If (m Mod i) = 0 Then GoTo NotNextM
         Next i
         Print m; "  ";
         j = j + 1
         If j = 10 Then j = 0: Print
NotNextM:
    Next m
End Sub