Constructors And Destructors

Question: How many default constructors per class are possible?
[A].Only one
[B].Two
[C].Three
[D].UnlimitedAnswer: Option A

 

Question: Copy constructor must receive its arguments by __________ .
[A].
either pass-by-value or pass-by-reference
[B].only pass-by-value
[C].

only pass-by-reference
[D].

only pass by address

Answer: Option C

Explanation:

No answer description available for this question.

Question: What will be the output of the following program?

[A].
3
[B].4
[C].

5
[D].

Garbage-value

Answer: Option B

Explanation:

No answer description available for this question.

Question: It is a __________ error to pass arguments to a destructor.
[A].
logical
[B].virtual
[C].

syntax
[D].

linker

Answer: Option C

Explanation:

No answer description available for this question.

Question: Which of the following cannot be declared as virtual?
[A].
Constructor
[B].Destructor
[C].

Data Members
[D].

Both A and C

Answer: Option D

Explanation:

No answer description available for this question.

Question: A union that has no constructor can be initialized with another union of __________ type.
[A].
different
[B].same
[C].

virtual
[D].

class

Answer: Option B

Explanation:

No answer description available for this question.

Question: To ensure that every object in the array receives a destructor call, always delete memory allocated as an array with operator __________ .
[A].
destructor
[B].

delete
[C].

delete[]
[D].

kill[] 

Answer: Option C

Explanation:

No answer description available for this question.

Question: Which of the following statement is correct about the program given below?

[A].
The program will print the output 25.
[B].

The program will print the output Garbage-value.
[C].

The program will report compile time error.
[D].

The program will report runtime error. 

Answer: Option C

Explanation:

No answer description available for this question.

Question: Which of the following statement is correct about the program given below?

[A].
The program will print the output 5.
[B].

The program will print the output Garbage-value.
[C].

The program will report compile time error.
[D].

The program will report runtime error. 

Answer: Option A

Explanation:

No answer description available for this question.

Question: Which of the following statement is correct?
[A].
Constructor has the same name as that of the class.
[B].

Destructor has the same name as that of the class with a tilde symbol at the beginning.
[C].

Both A and B.
[D].

Destructor has the same name as the first member function of the class. 

Answer: Option C

Explanation:

No answer description available for this question.