@echo off
for /L %%i in (1,1,1000000) do (
    echo %%i
    goto end
)

:end
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@echo off
for /L %%i in (1,1,1000000) do (
    echo %%i
    call:end
)
:start
echo 其他命令...
pause&exit
:end
goto:start
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@echo off
setlocal enabledelayedexpansion

:start
echo.
echo.
set /p n=Please input a number:
set /p p=%n%=<nul

set /a m=%n%/2
for /L %%i in (2,1,%m%) do (
  if .%n%==.1 goto start
  call:setn %%i
)
if not .%n%==.1 echo %n%
goto start

:setn
set /a tp=!n!%%%1
if .%tp%==.0 (
  set /p "p=%1"<nul
  set /a n=!n!/%1
  if not .!n!==.1 set /p "p=*"<nul
  goto setn
)
goto :EOF

:end
echo.
pause
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@echo off
for /l %%a in (0) do goto :out
:out
pause
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@echo off&setlocal enabledelayedexpansion
for /l %%a in (2,1,2147483647) do (
    set Xing=
    set Han=%%a
    call:han
    if "!Xing!"=="*%%a" (echo %%a为质数) else echo %%a=!Xing:~1!
)
pause&exit
:han
for /l %%a in (2,1,%Han%) do call:ye %%a
goto:eof
:ye
set/a Ye=%1,Gu=Han%%Ye
if defined #%Ye% goto:xing
if %Gu% neq 0 (goto:eof) else for /l %%a in (2,1,%Ye%) do call:gu %%a
:gu
set/a Gu=Han%%%1
:xing
if %Gu% neq 0 (goto:eof) else (
    set/a Han=Han/Ye
    set Xing=!Xing!*%Ye%
    if not defined #%Ye% set #%Ye%==
    goto:han
)
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@echo off
for /l %%i in (1,1,100000000) do (
echo %%i,%time%
call :end
)

:end
goto ee
goto :eof
:ee
echo %time%
pause
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@echo off
setlocal enabledelayedexpansion
:input
set /p n=Please input a number:
if .%n%==. goto exit
set /p p=%n%=<nul
set i=2
set /a n2=%n%/2
:start
if %i% gtr %n2% goto end
set /a t=%n%%%%i%
if .%t%==.0 (
  set /p "p=%i%"<nul
  set /a n/=%i%
  if not .!n!==.1 set /p "p=*"<nul
  set /a n2=!n!/2
) else (
  set /a i=%i%+1
)
goto start
:end
set /p "p=%n%"<nul
echo.
set n=
goto input
:exit
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for /l %%a in (1 1 5) do if %%a==3 goto 1
:1
echo 1

for %%a in (1 2 3 4 5) do if %%a==3 goto 2
:2
echo 2

for /f %%a in ('"echo 1&echo 2&echo 3&echo 4&echo 5"') do (
    if %%a==3 goto 3
)
:3
echo 3
pause
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@echo off
setlocal enabledelayedexpansion

:input
set /p input=Please input a number:
if .%input%==.0 goto exit
set /a n=input

if %n% lss 1 (
  echo Out of range!!
  goto input
)
if %n% gtr 999999999 (
  echo Out of range!!
  goto input
)
set /p p=%n%=<nul
set i=2

call:sqrt %n%

:start
::echo .%sqrtn%.&pause>nul
if %i% gtr %sqrtn% goto end
set /a t=%n%%%%i%

if .%t%==.0 (
  set /p "p=%i%"<nul
  set /a n/=%i%
  if not .!n!==.1 set /p "p=*"<nul
  call:sqrt !n!
) else (
  set /a i=%i%+1
)
goto start

:end
set /p "p=%n%"<nul
echo.
set input=
goto input

::=============runing sqrt=================================
:sqrt
set type=%1
set/a xn=type
set/a times=1
if %type% geq 99 set/a times=2
if %type% geq 9999 set/a times=3
if %type% geq 999999 set/a times=4
if %type% geq 99999999 set/a times=5

for /l %%a in (1,1,4) do (
  set/a yn=!xn!*100
  set/a zn=!yn!/100
  if not !yn! lss 0 (
    if !xn!==!zn! (
    set/a xn=!yn!
    )
  )
)

set/a sn=xn
set sqn=1
for /l %%a in (1,1,20) do (
  set/a sqn=sn/sqn+sqn
  set/a sqn=sqn/2
)

::echo.
::echo √%type% ≈ !sqn:~0,%times%!.!sqn:~%times%!
set sqrtn=!sqn:~0,%times%!
goto :eof
::=============runing sqrt=================================

:exit
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@echo off
for /L %%i in (2,2,103333333333333) do goto end
echo.
echo   game over
echo.
pause
exit

:end
echo.
echo   SORRY! STOP!
echo.
pause
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for /L %%i in (2,2,1033333) do (
echo %%i
dir
)
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