References are taken from these websites

http://www.stroustrup.com/

http://www.cplusplus.com/

http://cprogramming.com/

http://cplusplus.com/

http://www.wibit.net/

http://www.psexam.com

http://www.tutorialspoint.com

http://www.indiabix.com/cpp-programming/oops-concepts/001001

http://www.programmingsimplified.com/

www.wikipedia.org

www.cppforschool.com

Google images

www.mysql.com

nroer.gov.in

phet.colorado.edu

www.authorstream.com

http://whatis.techtarget.com/

about.com

http://www.scribd.com/

Special thanks to my team members ( Tanu Singh , Sneha Negi , Shubham Bhardwaj , Paritosh)