Dear Shravan ,

As per your query i feel that you much more interested in the field of Computer science then you did wrong to take bsc in PMCS but don't worry now days lots of IT/ITES companies such as TCS ,wipro  are hiring bsc candidates as trainee engineer so you can try for this but you should practice more in programming ,data structure and algorithm .If you facing any problem during this studies like doubt ,not understand the basic then you can go through the you tube video there are lots of basic and advance tutorials are there you can refer it .

Hope it will helpful

Thanks