Cognex Software Engineer interview questions

First he asked me about my future plan after graduating, what do I want to do specifically? Then he describe me about Cognex, what is Cognex doing. At last, he asked me what kind of courses had I taken? Such as Algorithm, Data Structure (computer science related courses), electrical engineering courses etc. He also ask me a question on C++ pointer.

It was an onsite interview. I booked my own tickets there and lived a night in Natick before my interview day. I didn't do well in the interview. And the HR asked me to mail him my receipts of transportation and hotel for reimbursement when I left. But after my interview, I sent him receipts and a follow-up email, and called him twice. But he never called me back or respond me. The front desk is also not very friendly. So overall it's a bad interview experience.