Visual Basic中,对于文本比较好的处理方式.

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "判定成绩的等级"
   ClientHeight    =   1785
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   1785
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   420
      Left            =   1440
      TabIndex        =   1
      Text            =   " "
      Top             =   240
      Width           =   1095
   End
   Begin VB.CommandButton Command1 
      Caption         =   "执行"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   3360
      TabIndex        =   2
      Top             =   240
      Width           =   855
   End
   Begin VB.Label Label2 
      Caption         =   " "
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   15.75
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   720
      TabIndex        =   3
      Top             =   1080
      Width           =   3135
   End
   Begin VB.Label Label1 
      Caption         =   "成绩"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   14.25
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   720
      TabIndex        =   0
      Top             =   360
      Width           =   735
   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()
    Dim score As Integer, temp As String
    score = Val(Text1.Text)
    temp = "成绩等级为："
    If score < 0 Then
        Label2.Caption = "成绩出错"
    ElseIf score < 60 Then
        Label2.Caption = temp + "不及格"
    ElseIf score <= 79 Then
        Label2.Caption = temp + "及格"
    ElseIf score <= 100 Then
        Label2.Caption = temp + "优良"
    Else
        Label2.Caption = "成绩出错"
    End If
End Sub