comment convertir un decimal en binaire

 salut,

@echo off

set num=
set bin=
set k=

set /A num=%1,1/num 2>Nul || (
  findstr /bl "::|" %0
  exit /b 1)
::|
::| usage:  prog 
::|
::| exemple: prog 2335
::|
:lp
set /A k=num %% 2
set bin=%k%%bin%
set /A num/=2
if %num% gtr 0 goto :lp

echo  %bin%