By the same token the interviewee is trying to get a sense of your skills, with red flags of their own. "*.c" is a glob, not a regexp. Quoting from Wikipedia:

By the same token the interviewee is trying to get a sense of your skills, with red flags of their own. "*.c" is a glob, not a regexp. Quoting from Wikipedia: > Globs do not include syntax for the Kleene star which allows multiple repetitions of the preceding part of the expression; thus they are not considered regular expressions, which can describe the full set of regular languages over any given finite alphabet