RTTI stands for "Run Time Type Identification". In an inheritance hierarchy,
we can find out the exact type of the objet of which it is member. It can be done
1) dynamic id operator
2) typecast operator
RTTI is defined as follows: Run Time Type Information, a facility that allows an
object to be queried at runtime to determine its type. One of the fundamental principles
of object technology is polymorphism, which is the ability of an object to dynamically
change at runtime.