C++ Programming - OOPS Concepts - Discussion

Correct answer is abstraction not data hiding.

Data hiding means giving/revoking access members. Like access specifiers.

Eg: Public/private/protected. :).

Abstraction is process of identifying key aspects of an entity and ignoring the rest. So answer should be abstraction.

From my thinking abstraction is right answer because abstraction show only show essential information.

Encapsulation: The wrapping up of data and functions into a single unit is called encapsulation.

Abstraction: Abstraction refer to the act of representing the essential features without including the background details.

Data hiding: The data is not accessible to any other function except the function which is binding to that data.

So the answer is B (ABSTRACTION) not c.

Encapsulation means protecting data from other programmers in real programming world which can be achieved by the making data variable as private data. The private data variable can only be accessed inside the declared class if we want to allow to access the value to other programmers we provide the another way that is better and setter method for that private variable.

So by better and setter method we allow the another programmer to access the variable we doing this as Abstraction and When we declare the private methods which means we are doing encapsulation.

Declaring data members with access specifier private is known as data hiding. When a program creates a GradeBook object, data member courseName is encapsulated (hidden).

In the object and can be accessed only by member functions of the object's class. In class GradeBook, member functions setCourseName and getCourseName manipulate the data Member courseName directly.

According to me abstraction is the correct answer because abstraction focuses on the main aspect of the application and hide the internal details so that it will be more flexible for the user to use.

Write a simple single program to diff b/w data hiding and abstraction?

The answer would be Abstraction not data hiding, because in abstraction only we show the user the necessary datas.

Further, if there is difference between abstraction and data hiding, hence provide me a suitable difference between the two.