Interviewer asked about multi threading in c++, 2 question from oa, drilled down into os and oops, some debugging questions from c and c++, also asked about my previous internships, and grilled me on my projects.

Was a very good interview, the interviewer was professional and willing to help me out when I couldn't figure something out. Unfortunately I didn't get the offer but the experience was great and taught me a lot about the companies interview policy.