@echo off&SetLocal EnableDelayEdexpansion&cd /d "%~dp0"

set "n=12"
for /f "delims=" %%a in ('type 11.txt^&echo +++第') do (
  set /a "n-=1"
  set "str=%%a"
  if defined flag if "!str:~0,4!" == "+++第" (
    for /l %%b in (1 1 !n!) do echo;
    set "n=11"
  )
  if not "!str!" == "+++第" echo %%a
  if "!str:~0,4!" == "+++第" set "flag=1"
)

pause
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@echo off & setlocal enabledelayedexpansion & set /a reline=-1
:-----------------------------------------------------------------------
set "filename=test.txt"
rem 设置文件名
:-----------------------------------------------------------------------
(for /f "tokens=1* delims=:" %%i in ('findstr /n .* "!filename!"') do (
      echo %%j | find "+" >nul && (set /a _linenum+=1,reline+=1
          set /a neline=!reline!!_linenum!,line=%%i,_temp=neline-line,_temp-=__temp,__temp=_temp
          for /l %%i in (1 1 !_temp!) do echo= & set /a endline+=1)
      echo=%%j & set /a endline+=1)
  set /a end=neline+9-endline
  if !end! lss 0 set /a end=~end
  for /l %%i in (1 1 !end!) do echo=
)>_!filename!
echo 完成^^!
pause>nul
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@echo off&setlocal enabledelayedexpansion
for /f "delims=" %%a in (a.txt) do (
  set "str=%%a"
  if "!str:~,4!"=="+++第" set/a m+=1,n=0
  set/a n+=1&set ".!m!_!n!=!str!"
)
for /l %%a in (1 1 !m!) do (
  for /l %%b in (1 1 11) do echo,!.%%a_%%b!
)
pause
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@echo off&setlocal enabledelayedexpansion
(for /f "delims=" %%i in (a.txt) do (
	set "str=%%i"
	set /a h+=1
	if "!str:~0,4!"=="+++第" (
		set m=1
		if !m! equ 1 set /a n=11-h
		set h=0
		if !n! gtr 0 (
			if defined i for /l %%a in (1 1 !n!) do echo;
			set /a m=0,i=0
		)	
	)
	echo %%i
))>b.txt
set /a n=10-h
(for /l %%a in (1 1 !n!) do echo;)>>b.txt
echo ok
pause
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