Private Sub Form_click() Dim str1 As String, str2 As String, i As Integer str1 = "ab" For i = Len(str1) To 1 Step -1 str1 = str1 & Chr(Asc(Mid(str1, i, 1)) + 1) Next i Print str1End Sub结果是abcb我不知道为什么?谁能帮我解答一下,非常感谢