Undeclared major switch to engineering?

I am an international student admitted to the Revelle college at UCSD. I chose undeclared in my UC application because I feared that my materials wouldn’t make me a competitive applicant for engineering majors but yes I do want to take an engineering major. I want to switch to computer engineering or electrical & computer engineering. Is that possible at all? If yes, what are my chances and how should I go about doing it?

Thanks in advance for clearing my doubts.

This is my first thread. Sorry for the sloppiness. I am admitted for the 2017 fall intake.

Very difficult and here is the information to switch majors. If you were admitted to any other universities as an Engineering major, consider these more seriously.

http://www.ece.ucsd.edu/undergraduate/capped-major-status

http://cse.ucsd.edu/undergraduate/admissions/capped-major-status