中国DOS联盟

@echo off
setlocal EnableDelayedExpansion

if %2.==. goto input
set /A N=%1
set /A D=%2
goto compute

:input
echo Input N:
set /p NN=
set /A N=%NN%
echo Input D:
set /p DD=
set /A D=%DD%
goto compute

:compute
if %N%==0 echo Wrong Intry && goto input
if %D%==0 echo Wrong Intry && goto input
set str=

for /L %%a in (1,1,%D%) do @set /A Left%%a=0
for /L %%a in (1,1,%D%) do @set /A Result%%a=0
set /A int_part="%N%/%D%"
set /A N="%N%%%%D%"
set /A tool=%N%
if %tool%==0 echo The result of expression "%N%/%D%" is %int_part% && goto :EOF
set /A turn=1

:start
set /A "tool*=10"
set /A Result%turn%="%tool%/%D%"
set /A Left="%tool%%%%D%"
if %Left%==0 set /A begin=-1 && set /A end="%turn%" && goto endCompute
if %Left%==%N% set /A begin=0 && set /A end="%turn%" && goto endCompute
if not !Left%Left%!==0 set /A begin="!Left%Left%!" && set /A end="%turn%" && goto endCompute

set /A Left%Left%=%turn%
set /A tool=%Left%
set /A "turn+=1"
goto start

:endCompute
if %3.==. echo The result of expression "%N%/%D%" is  
set result=#
for /L %%i in (1,1,%end%) do @set result=!result!!Result%%i!
set result=%result:~1%
if %begin%==-1 echo %int_part%.%result% && goto end
if %begin%==0 echo %int_part%.[%result%] && goto end
echo %int_part%.!result:~0,%begin%![!result:~%begin%!]

:end
if %2.==. echo. && echo Press any key to quit application && pause>nul