3-> .for CS (sorting ,palindrome ,prime # ,string ,Array) read 20 general interview code and its done from tech part . puzzle i was asked to find a abnormal less weighing coin out of 24 using physical balance min times(there is a simple logarithmic algorithm ) . 4-> basic of c : i was asked call by value/reference or call it scope of variable . than general question about shifting to new city ,extra hours of work ,job timings .more like a conversation .