Dear Indrani,
Be Coool ,their is no sense of confusion as to which books are to be referred, because the 2012 new syllabus text books issued by the institute is totally suffiecient as it covers almost maximum problems with solutions..,but got to hear that the 2008 old syllabus text books dont have enough problems , so if you are registered for old syllabus then do purchase compilers & else ...ie if you are under new syllabus then no extra study materials required...
Even for the exam just conducted,most of the problems were similar to those mentioned and covered in the institue text book.So dont panic put enough time and study institute material that is enough to pass with excellence..
Happy reading ...and march your destiny with confidence and strong will...
Suggestions & Critics always honoured,
Bye.