GATE IT 2006 | Question: 53

Question

Match the following concepts and their best possible descriptions.

	Concept		Description
i.	overloading	a.	allows to define a class to have properties of another class
ii.	friend	b.	defining a set of similar functions
iii.	constructor	c.	used in dereferencing
iv.	protected	d.	used to give a non-member function access to the private parts of an object
v.	this	e.	a function which is automatically called when an object is created
vi.	inheritance	f.	allows a derived class to have access to the private parts of the base class
		g.	a pointer to the object associated with the current function
		h.	used to obtain object persistence

• A. i-b, ii-d, iii-e, iv-f, v-g, vi-a
• B. i-c, ii-a, iii-e, iv-d, v-h, vi-f
• C. i-c, ii-f, iii-h, iv-a, v-g, vi-d
• D. i-b, ii-e, iii-c, iv-f, v-g, vi-s

Answer 1

(A) is the answer. All are straight from definitions.

Comments

in syllabus?

Answer 2

ii.Friends are functions or classes declared with the friend keyword.
A non-member function can access the private and protected members of a class if it is declared a friend of that class. That is done by including a declaration of this external function within the class, and preceding it with the keyword friend : (d)

v. ‘this’ is a reference variable that refers to the current object. : (g)

Suitable option : (A)