IRA or 401(k)?

Im young (23) and have a low salary right now but I want to start saving now. My employer offers a 401(k) with no matching. Does it make sense for me to open and begin contributing to a Roth IRA instead of enrolling in the 401(k) or will i lose money this way? I dont plan to work for this employer for more than about another year. Thank you in advance! ;)