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Quiz: Constructor And Destructor

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Number of Questions: 20

Question: 1 -

Destructor has a same name as the constructor and it is preceded by?

Options:

  1. ?

  2. ~

  3. $

  4. !

    5. Answer:

    ~
    Solution:

    Destructor has a same name as the constructor and it is preceded by ~.

Question: 2 -

Which of the followings is/are automatically added to every class, if we do not write our own.

Options:

  1. All of the above

  2. A constructor without any parameter

  3. Copy Constructor

  4. Assignment Operator

    5. Answer:

    All of the above
    Solution:

    In C++, if we do not write our own, then compiler automatically creates a default constructor, a copy constructor and a assignment operator for every class.

Question: 3 -

Like constructors, can there be more than one destructors in a class?

Options:

  1. May Be

  2. No

  3. Can't Say

  4. Yes

    5. Answer:

    No
    Solution:

    There can be only one destructor in a class. Destructor's signature is always ~ClassNam()and they can not be passed arguments.

Question: 4 -

Which of the following gets called when an object is being created?

Options:

  1. Main

  2. Virtual Function

  3. Constuctor

  4. Destructors

    5. Answer:

    Constuctor
    Solution:

    Virtual Function gets called when an object is being created.

Question: 5 -

State whether the following statements about the constructor are True or False. i) constructors should be declared in the private section. ii) constructors are invoked automatically when the objects are created.

Options:

  1. True,True

  2. False,False

  3. False,True

  4. True,False

    5. Answer:

    False,True
    Solution:

    Statement 1 is false and statement 2 is true.