在窗体上画一个命令按钮，然后编写如下代码：
Private Type Record
R_ID As Integer
R_Name As String * 20
Ene Type
Private Sub Commandl_Click( )
Dim M _Sise, N_Char, M_Char
Open" c: \file. txt" For Input As #1
M_sise=LOF(1)
For N_Char = M_Sise To 1 Step - 1
Seek#1, Next Char
M_char = Input(1 ,#1)
Next
Print EOF(1)
Close#1
End Sub
程序运行后，单击命令按钮，其输出结果为 【15】 。