cutebe

@echo off

for /f "delims=" %%z in ('dir/b/ad')do set "#z=%%z"
echo 最后一个目录名：[%#z%]
for /f "tokens=1-2 delims=0123456789" %%d in ("%#z%")do set "#y=%%d%%e"
echo 非数字：[%#y%]
for /f "delims=%#y%" %%s in ("%#z%")do set/a "#s=1%%s+1"
echo 数字递增：[%#s%]
set "bookName=任务%#s:~-3% 0"
echo 新书目录名：[%bookName%]

md "%bookName%"
goto :eof
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cutebe

我这里是没有win10，你加上pause测试一下，看从哪里开始显示错误。

@echo off
for /f "delims=" %%z in ('dir/b/ad')do set "zh=%%z"
echo 最后一个目录名：[%zh%]
set/a "sz=1%zh:~2,3%+1"
set "bookName=任务%sz:~-3% 0"
echo 新书目录名：[%bookName%]
pause

md "%bookName%"
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