ISRO CSE 2016 | Question: 78

Question

If a class $C$ is derived from class $B$, which is derived form class $A$, all through public inheritance, then a class $C$ member function can access

• A. only protected and public data of $C$ and $B$
• B. Only protected and public data of $C$
• C. all data of $C$ and private data of $A$ and $B$
• D. public and protected data of $A$ and $B$ and all data of $C$

Answer 1

option D

WHy?

summarize the different access types according to who can access them in the following way:

Access	public	protected	private
Same class	yes	yes	yes
Derived classes	yes	yes	no
Outside classes	yes	no	no

Answer 2

When deriving a class from a public base class,public members of the base class become public members of the derived class and protected members of the base class become protected members of the derived class. A base class's private members are never accessible directly from a derived class, but can be accessed through calls to the public and protected members of the base class.

Hence,Option(D)Public and protected data of A and B and all data of C.

Comments

I think Option d should be like this-

Public and protected data of A and B "respectively" and all data of C.

since C can access only public data of class A and can't access private and protected data. And it can also access public and protected data of class B.

ryt???