Amazon Software Development Engineer II interview questions

4 rounds plus one extra round for coding for me. I was interviewed 4 rounds from morning to lunch time. The company prepared the lunch for me so I took it with my last interviewer. The content of the interview is interest, nothing about programming language, but about solving problem and how to think.

Technical Question: I was asked to write code on collabedit: Program to do a spiral traversal of matrix I was asked which programming language I would choose between C and C++ and why? This was followed-on by some more questions - when would you not choose C or C++? I was asked to mention my best project and describe what I liked in this project. I was then asked what was the thing you do not like in the the project you like best?