Explicit conversion vs Implicit using reference with virtual functions

Explicit conversion vs Implicit using reference with virtual functions

References

Reference NO 1

http://stackoverflow.com/questions/15193061/explicit-conversion-vs-implicit-using-reference-with-virtual-functions

Reference NO 2

http://en.cppreference.com/w/cpp/language/implicit_cast

Reference NO 3

http://www.doc.ic.ac.uk/lab/cplus/c++.rules/chap13.html

Reference NO 4

http://www.cplusplus.com/doc/tutorial/typecasting/

Reference NO 5

http://msdn.microsoft.com/en-us/library/5s5sk305.aspx

Reference NO 6

http://msdn.microsoft.com/en-us/library/z5z9kes2.aspx

Reference NO 7

http://www.petebecker.com/js/js200004.html

Reference NO 8

http://docs.oracle.com/cd/E19422-01/819-3690/Cast.html