ARM Assembly - Reading ".dat" extension / importing information -

i supposed create program ".dat" extension, armsim# doesn't read file. first off, how supposed have read file?

also, program writing needs let user input list of numbers , output should first integer, second integer, total number of integers, total numbers not first integer, , total numbers not second integer.

on top of it, needs check errors , have readable output.

i stuck , don't know arm. learn since having future projects able on own, if can describe code great. whole week have been trying read websites on arm , still stare blankly @ screen when try code anything. great.