I'll have to agree with Shagdevil on this one. Cobol is still very common in large enterprises. Most banking systems still run on cobol, as do most telecommunication billing and ordering systems. There is still a lot of Cobol programming going on, it is just very specific to certain industries. My company uses it extensively as do many of the companies we work with.

With that being said however, I would still take a c++ class as it is far more common.