Visual Basic中,对于文本比较好的处理方式.

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "三个数排序"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "排序"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   3240
      TabIndex        =   9
      Top             =   960
      Width           =   975
   End
   Begin VB.TextBox Text4 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   405
      Left            =   1560
      TabIndex        =   8
      Text            =   " "
      Top             =   2040
      Width           =   1755
   End
   Begin VB.TextBox Text3 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   1560
      TabIndex        =   7
      Text            =   " "
      Top             =   1560
      Width           =   975
   End
   Begin VB.TextBox Text2 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   405
      Left            =   1560
      TabIndex        =   6
      Text            =   " "
      Top             =   1080
      Width           =   975
   End
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   345
      Left            =   1560
      TabIndex        =   5
      Text            =   " "
      Top             =   570
      Width           =   975
   End
   Begin VB.Label Label5 
      Caption         =   "排序结果"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   600
      TabIndex        =   4
      Top             =   2160
      Width           =   975
   End
   Begin VB.Label Label4 
      Caption         =   "第三个数"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   600
      TabIndex        =   3
      Top             =   1680
      Width           =   975
   End
   Begin VB.Label Label3 
      Caption         =   "第二个数"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   600
      TabIndex        =   2
      Top             =   1200
      Width           =   975
   End
   Begin VB.Label Label2 
      Caption         =   "第一个数"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   600
      TabIndex        =   1
      Top             =   600
      Width           =   975
   End
   Begin VB.Label Label1 
      Caption         =   "三个数从大到小排序"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   1320
      TabIndex        =   0
      Top             =   120
      Width           =   2295
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
    a = Val(Text1.Text)
    b = Val(Text2.Text)
    c = Val(Text3.Text)
    If a < b Then            '本条件语句实现a>=b
        t = a: a = b: b = t
    End If
    If a < c Then            '本条件语句实现a>=c
        t = a: a = c: c = t
    End If
    If b < c Then            '本条件语句实现b>=c
        t = b: b = c: c = t
    End If
    Text4.Text = a & "," & b & "," & c
End Sub