答案:
参考答案:
解析: 在窗体上建立好控件后,先设置控件属性,再编写事件过程。 文本框显示的内容由Text属性设置,Multiline属性决定文本框是否可多行显示;按钮的标题由Caption属性设置,单击命令按钮触发Click事件。题中涉及到文件的操作,读入顺序文件以顺序的方式打开,用input#语句读取数据。另外需要注意的是对文件操作完后,一定要关闭文件。解题步骤: 第一步:建立界面并设置控件属性。程序中用到的控件及其属性值见表6-5。
第二步:编写程序代码。 程序提供的代码。 mode.bas代码: Option Explicit Sub putdata(t_FileName As String,t_Str As Variant) Dim sFile As String sFile="\" & t_FileName Open App.Path & sFile For Output As #1 Print #1,t_Str Close #1 End Sub 窗体代码: Option Explicit ’Dim (1 To 100) As Integer Private Sub Cmd1_Click() Dim j As Integer Open App. Path& "\in.txt" For Input As #1 For j = 1 To 100 Input #1, i(j) Text1.Text = Text1.Text & i(j) & Space(5) Next Close #1 End Sub Private Sub Cmd2_Click() ’Dim As Integer Dim temp As Long For j = 1 To 50 temp = temp + i(j) Next ’Textl. = temp putdata "out.txt", temp End Sub参考代码: Option Explicit Dim i(1 To 100) As Integer Private Sub Cmd1_Click() Dim j As Integer Open App. Path & "\in.txt" For Input As #1 For j = 1 To 100 Input #1, i(j) Text1.Text = Text1.Text & i(j) & Space(5) Next Close #1 End Sub Private Sub Cmd2_Click() Dim j As Integer Dim temp As Long For j = 1 To 50 temp = temp + i(j) Next Text1.Text = temp putdata "out.txt", temp End Sub 第三步:调试并运行程序。 第四步:按题目要求存盘。