It was a very funny situation.

The interviewer asked me about fibonacci and made me write the code and it was so good and simple code. But the interviewer did not know what he was asking and told me it will be causing the stack overflow and did not understand the question and fibonacci that he gave. haha.. definitely it seemed to try to prove his intelligence to another interviewer and proved he was not that smart. after the interview i emailed them to hope they can make a decision based on fairness but as i expected they are not that good and proved one thing more. if you meet this interviewer guy graduated upenn surprisingly please expect they will say its wrong answer even though you are right.

if(n-2>0) return f(n-2)+f(n-1); else return 1;

fibonacci and write the recursive function