medical informatics is a huge field that's going to probably blow up in the future. hospitals are starting to store patient information in databases instead of in paper files, they have computers that will pop up a warning if they try to prescribe a medication that will react poorly with another medication already in their file. normal computer programmers would have a huge learning curve if they had to learn/lookup all the medication interactions before making this program.
if you're planning on practicing - programming skills won't help you. period.
but if you want a part-time job while you're in med school, (or if you want to do research for the summer after your first year) programming in a research lab will probably pay more than being a tech will (i know because that's how i've been supporting myself through undergrad/grad school). I don't know if C and C++ will be in vogue, but i do know that in the genomics lab where I work, Perl and R (a stats programming language) are used the most, with PL/SQL as a close third. once you know one programming language, learning new ones doesn't take that long.
(yes, i was a cs major)
