Microsoft Software Development Engineer interview questions

I handed my resume to an on-campus recruiter. A few days later, I got an email asking me to sign up for an interview slot on campus. I had an interview a few weeks later with a PM from the Mountain View campus. She recommended me for a SDE internship, and about 2 weeks after that interview I was notified that I would be flown to Redmond for final rounds. They changed the location to Mountain View, CA a few weeks later. I flew over, stayed over two nights, and on the second day, had my interview. There were four rounds, based in C++ (my most familiar language was Java). The last round was with a high-up manager who talked about Microsoft's goals and future direction. I heard less than 24 hours after my last interview through email that I got a position as a summer intern. Whole process was ~2 months because of my busy finals period and trying to schedule a time to fly over to California.

I summited my resume when they came to my university. It takes only `1 week to get the interview. But I have not prepare for anything that time. The question was difficult than those online. I did not perform well. The interviewer seems not help with clarify the question. I need to find the specific functions. If the communication is well, that will be helpful.