Does putting "undecided" on my college apps hurt my chances?

<p>Well, I've really considered applying to USC, Cal, UCLA, and some other UCs. The problem is.. I really do not know what I wanna major in. I heard that engineering and pre-med are one of the most competitive majors out there and I really don't need more competition since a lot of the colleges I'm applying to are either "slight reach" or "reach." I wanna know whether putting "undecided" as a major will truly hurt my chances of getting admitted into a college of my choice. Can someone please tell me?</p>

<p>no it wont</p>