excel里如何做到在A1输入“好好学习”，B1自动显示“HHXX”(文字的拼音首字母)？

excel里如何做到在A1输入“好好学习”，B1自动显示“HHXX”(文字的拼音首字母)？

回答的底部有配图及上传已做好的附件：


打开EXCEL，先按ALT+F11组合键，执行“插入→模块”命令，插入一个新模块。再双击插入的模块，进入模块代码编辑状态，把以下代复制粘贴到右边的空白窗口，送闭该窗口，在B1输入公式下拉即可。


B1公式：
=IF(A1="","",getpy(A1))


代码如下：（本行不要复制）
Function pinyin(p As String) As String
i = Asc(p)
Select Case i
Case -20319 To -20284: pinyin = "A"
Case -20283 To -19776: pinyin = "B"
Case -19775 To -19219: pinyin = "C"
Case -19218 To -18711: pinyin = "D"
Case -18710 To -18527: pinyin = "E"
Case -18526 To -18240: pinyin = "F"
Case -18239 To -17923: pinyin = "G"
Case -17922 To -17418: pinyin = "H"
Case -17417 To -16475: pinyin = "J"
Case -16474 To -16213: pinyin = "K"
Case -16212 To -15641: pinyin = "L"
Case -15640 To -15166: pinyin = "M"
Case -15165 To -14923: pinyin = "N"
Case -14922 To -14915: pinyin = "O"
Case -14914 To -14631: pinyin = "P"
Case -14630 To -14150: pinyin = "Q"
Case -14149 To -14091: pinyin = "R"
Case -14090 To -13319: pinyin = "S"
Case -13318 To -12839: pinyin = "T"
Case -12838 To -12557: pinyin = "W"
Case -12556 To -11848: pinyin = "X"
Case -11847 To -11056: pinyin = "Y"
Case -11055 To -2050: pinyin = "Z"
Case Else: pinyin = p
End Select
End Function
Function getpy(str)
For i = 1 To Len(str)
getpy = getpy & pinyin(Mid(str, i, 1))
Next i
End Function