Commvault had visited our campus for the career fair. Some of us got a mail the same night to attend a programming challenge the next day at the University. There were three programs with 5,6,7 marks. They instructed us to solve any one first and then attempt the others. Question were : Convert a number to binary, Find if a loop exists in a Linked List. Can't recall the third one. It was a online compiler type interview. So you had to write, compile execute and pass their tests. I then got a mail for a telephonic. The guy asked me just one question. char *a="something"; Is this valid or invalid. Give reasons. Then what would strlen(a) return? The next question was what is sizeof. That's it. Simple basic stuff.