It is a header file which contains the
prototype of endl function and a namespace
std which contains declaration of cin and
cout objects.
A class is a user defined data type which is
used to make an own data type. A class
keyword is used to declare a class. A class
contains two things i.e. properties and
methods. The object is created by the class
and the size of the class is determined by the
properties present in the class.
A members of a class in specified by three
access specifiers i.e. private, public and
protected.
Encapsulation is a technique to hide the
internal features of an object. The
encapsulation can only be done by private
access specifier which is only applicable for
class. It doesn't let those properties or
methods which are declared or defined under
it, to be disturbed by any other function
defined outside of that class. The advantage
of encapsulation is that the object stays in a
valid state.
Television is the best example of
encapsulation because if the manufacturer
doesn’t cover the back side of the television
