@echo off&setlocal enabledelayedexpansion
set "tab=#"&rem 把左边的#号替换为 tab 键
for /f "delims=" %%a in (ss.txt) do (
   set "str=%%a"
   set "str=!str:%tab%%tab%%tab%%tab%=%tab%0%tab%0%tab%0%tab%!"
   set "str=!str:%tab%%tab%%tab%=%tab%0%tab%0%tab%!"
   set "str=!str:%tab%%tab%=%tab%0%tab%!"
   if "!str:~-1!"=="%tab%" set "str=!str:~0,-1!%tab%0"
   echo !str!
)
pause
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@echo off&setlocal enabledelayedexpansion
set "tab= #"&rem 把左边的#号替换为 tab 键
set /p var=<ss.txt
for %%a in (!var!) do (
   set /a n+=1
   for /l %%i in (1 1 !N!) do set t=!t!%tab%&set tt=!tt!%tab%0
   set t!n!=!t!&set t!n!!n!=!tt:~0,-1!
   set t=&set "tt="
)
set /a n-=1
for /f "delims=" %%a in (ss.txt) do (
   set "str=%%a"
   for /l %%i in (!n! -1 2) do (
      for /f "tokens=1,2 delims=/" %%j in ("!t%%i!/!t%%i%%i!") do (
         set "str=!str:%%j=%%k!"
    ))
   if "!str:~-1!"=="%tab%" set "str=!str:~0,-1!%tab%0"
   echo !str!
)
pause
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@echo off&setlocal enabledelayedexpansion
set Tab=        &rem 这个空白换为Tab键
for /f "delims=" %%a in (a.txt) do (
        set var=%%a
        set str=
        for %%b in ("!var:%Tab%=" "!") do (
                set #%%~b=%%~b
                set #=0
                set str=!str!%Tab%!#%%~b!
        )
        echo !str:~1!

)
pause
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@echo off & SetLocal enabledelayedexpansion
:: tab 键
set "tab=	"
For /f "skip=1 delims=" %%a in (a.txt) do (
	set "sString=%%a" & set "sVar="
	set "sString=!sString:%tab%=%tab%#!"
	set /a n = 0 & call :recur !sString:~1!
)
set _ & Pause & exit /b

:recur
set /a n += 1
For /f "tokens=1* delims=%tab%" %%a in ("%*") do (
	set "sVar=%%a" & set "sVar=!sVar:#=!"
	If "!sVar!" equ "" ( set "sVar=0" )
	set /a _!n! += sVar
	If "%%b" neq "" ( call :recur %%b )
)
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@echo off&setlocal enabledelayedexpansion
set Tab= &rem 这个空白换为Tab键
for /f "delims=" %%a in (a.txt) do (
set var=%%a
set var=!var:%Tab%=%Tab%#!%Tab%
set var=!var:#%Tab%=0%Tab%!
set var=!var:#=!
echo !var:~,-1!
)
pause
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@echo off
set Tab= &rem 这个空白换为Tab键
for /f "delims=" %%a in (a.txt) do (
set var=%%a
setlocal enabledelayedexpansion
set var=!var:%Tab%=%Tab%#!%Tab%
set var=!var:#%Tab%=0%Tab%!
set var=!var:%Tab%#=%Tab%!
echo !var:~,-1!
endlocal
)
pause
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@echo off&setlocal enabledelayedexpansion
set "tab=        " 引号里的空格换成 Tab
for /f "delims=" %%a in (a.txt) do (
  set var=%%a
  set var="!var:%tab%="%tab%"!"
  set var=!var:""=0!
  echo !var:"=!
)
pause
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@echo off&setlocal enabledelayedexpansion
for /f "delims=" %%a in (a.txt) do (
  set var=%%a
  set n=0
  for %%a in ("!var:【Tab】=" "!") do set /a n+=1 , _!n!+=%%~a 2>nul
)
set _
pause
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@echo off
set Tab= &rem 这个空白换为Tab键
for /f "delims=" %%a in (a.txt) do (
set var=%%a%Tab%
setlocal enabledelayedexpansion
set var=!var:%Tab%%tab%=%Tab%0%Tab%!
set var=!var:%Tab%%tab%=%Tab%0%Tab%!
echo !var:~,-1!
endlocal
)
pause
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@echo off&setlocal enabledelayedexpansion
set "tab=#" rem请将#替换为tab键
for /f "delims=" %%a in (a.txt) do (
     echo %%a&set /a m=0
     set "str=%%a"&set "str=!str:%tab%=%tab%0!"
     for %%b in (!str!) do (
          set /a m+=1
          set "var=%%b"&set "var=!var:~1!"
          if not defined var set /a var=0
          set /a _!m!+=!var!
     )
     
)
set "_1=合计"
for /l %%a in (1,1,%m%) do (
     set /p=!_%%a!<nul
     if %%a neq %m% set /p=%tab%<nul
)
pause>nul
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@echo off&setlocal enabledelayedexpansion
set "Tab=#"   把 # 换成 Tab 键
for /f "skip=1 delims=" %%a in (a.txt) do (
  set var=%%a
  set n=0
  for %%a in ("!var:%tab%=" "!") do set /a n+=1 , _!n!+=%%~a 2>nul
)

more a.txt
for /l %%a in (1 1 %n%) do set end=!end!%tab%!_%%a!
echo 合计%end%
pause>nul
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@echo off
set v=,1
set /a v=v
echo %v%
pause  变量 v 的值变为 0

set v=1,
set /a v=v
echo %v%
pause  变量 v 的值变为 1
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@echo off
set m=1,2
set /a n=%m%
echo %n%
set /a n=m
echo %n%
pause
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set m=2+2
set /a n=m
set "2+2=1" 设置变量2+2
set /a n=m
pause
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@echo off
set v=bathome1
set /a v=v
echo %v%
pause  变量 v 的值变为 0

set v=1bathome
set /a v=v
echo %v%
pause  变量 v 的值变为 1

set v=1bathome
set /a v=%v%
echo %v%
pause  而这样会出错
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