Commvault Inter interview questions

The interview was through referral. I got an email asking to select multiple time slot for interview and they would get back to me with a fixed time. I got there prompt response in 24 hours. The interview was dot on time on phone. It started with basic questions what are you doing right now? Tell me your experience. He did not spend any time on what the company was doing what my role was going to be etc etc, got directly into asking me technical questions in C++. I said that my proficiency in C is more but I have basic knowledge of C++. He told me to rate myself on a scale of 1 to 10 . 10 being the highest expertise. The question started with difference between C and C++. What is inheritance, have you worked on debugging tools. What is inline function, difference between macro and inline function, public private protected. Difference between thread and process. Which is better and why? He was going into more detail and twisted the questions very well. I had limited knowledge of C++ so it did not go too far. In 1 hour I was done and he said the HR will get back. Hopping for the best but it's not looking so good.