I had a total of 6-7 rounds of interview.

1st round was normal aptitude questions. There were 10 questions without choices and time was 1 hour

2nd round was a programming round in which I got 3 programming questions and I did 2 of them in a duration of 2 hours

3rd round was writing test cases for a given program

4th round was a technical interview based on performance on this you may or may not have a logical reasoning round i.e puzzles and all. I didn't had that round.

5th round is Manager round

6th round is HR round

If you clear all these then you are selected...!!!!

Normal C syntax question and output generation question and writing test cases from the program you have written