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set str=取字符串长度abc123 for /f "skip=1 delims=:" %%a in ('^(echo/"%str%"^&echo.^)^|findstr /o ".*"') do set /a length=%%a-5 echo %length%
MsgBox(Len("取字符串长度abc123"))
echo 取字符串长度abc123>len.txt for %%i in (len.txt) do echo %%~zi del len.txt