45 questions.Majority of them from C++,some of them form OS.negative marking is there.

There were 2 rounds of technical interview,there was elimination after 1st round.They asked me to write the code for
programs. questions were mainly on strings,linked lists,trees. In second round they gave some programs (mainly on
pointers, not easy, tricky questions) and told me to explain the O/P. Here also they asked me to write the code for
programs.(OK if u know trees,linked lists,sorting well).Oops concepts were asked.OS is also asked.

There was no no separate HR round, in 2nd round tech. interview only they asked me some routine HR questions.

Be perfect with C, C++, DS.

Negative marking was there in written test so be careful. If u can clear written test and 1st round tech. interview u can get it.