Icarus Challenge 3 - fibonacci

@echo off
title Icarus Challenge 3 - Fibonacci Sequence
setlocal enabledelayedexpansion

:top
set/p steps=How many steps of the fibonacci sequence would you like to calculate?
set steps=!steps: =!
if not 0 lss %steps% cls&goto top

set step0=0
set step1=1
set num=2
set all=0

:loop
if %num% equ %steps% goto end
set /a temp1=%num% - 1
set /a temp2=%num% - 2
set /a step%num%= !step%temp1%! + !step%temp2%!
echo !step%temp2%! + !step%temp1%! = !step%num%!
set /a num+=1
goto loop

:end
for /l %%b in (1,1,%num%) do (
set all=!all!, !step%%b!
)
echo.
echo The numbers in a list:
echo %all%
pause > nul