@echo off
REM 99 Bottles of Beer in DOS Batch
REM First version by Gert-jan Los (los@lsdb.bwl.uni-mannheim.de)
REM The file with batch program must be named as "beer.bat"
REM Noted by Vladimir Vojacek (vojacek@seznam.cz), 2003-07-03
REM Last modified by Cory Boehne, 2004-01-01
if "%1"=="" goto outer
if "%1"=="body" goto body
:inner
for %%a in ( 9 8 7 6 5 4 3 2 1 0 ) do call beer body %2 %%a
goto end
:outer
for %%a in ( 9 8 7 6 5 4 3 2 1 0 ) do call beer inner %%a
goto end
:body
set num=%2%3
set bottle=bottles
if "%num%"=="99" set number=ninety-nine
if "%num%"=="19" set number=nineteen
if "%num%"=="09" set number=nine
if "%num%"=="99" goto skipfirst
if "%2"=="0" set num=%3
if "%num%"=="1" set bottle=bottle
if "%num%"=="0" goto last
 
echo %number% %bottle% of beer on the wall
echo.
:skipfirst
echo %