CS304 Final Term MCQs by Sparrows

CS304 by Sparrow · Final Term · Fall 2021-2022

1. In c++ dynamic binding and polymorphism will be achieved when member function will be __.

•  Private
•  Public

 virtual#

2. Virtual functions allow you to

•  create an array of type pointer-to-base class that can hold pointers to derived classes.
•  create functions that can never be accessed.
•  group objects of different classes so they can all be accessed by the same function code.#

3. In order to define a class template the first line of definition must be:

 template <class T>#

•  typename <template T>

Q4. Suppose derived class is inherited from base class. What happens when a derived class object is created?

•  The constructor of base class is executed before the constructor of derived class.

Q5. Which of the following causes run time binding?

•  Declaring object of abstract class
•  Declaring pointer of abstract class

 Declaring overridden methods as non-virtual#

Q6. Which of the following is/are advantage[s] of generic programming?

•  Reusability
•  Writability
•  Maintainability

 All of given#

Q7. Which of the following is the best approach if it is required to have more than one functions having exactly same functionality and implemented on different data types?

 Templates #

•  Overloading

8. The concept of derived class is involved in _____

9. Template functions use _________ than ordinary functions.

•  Greater Memory

 Lesser Memory#

•  Equal Memory

10. Non Template Friend functions of a class are friends of ________instance/s of that class.

 All #

•  One specific

11. By default the vector data items are initialized to ____

•  0 #
•  0.0
•  1

12. A copy constructor is invoked when

•  a function do not returns by value.

 an argument is passed by value.#

13. Like template functions, a class template may not handle all the types successfully.

 True #

•  False

14. In Private _____ only member functions and friend classes or functions of a derived class can convert pointer or reference of derived object to that of parent object
15. Then int member i of base class is accessible in class,

•  derived 1 only

 derived 2 only #

Q16. In case of public inheritance, protected members of base class will be in derived class?

•  Private
•  Public

 Protected#

17. Friend’s functions of class are _ members of that class.

•  Public
•  Private #

18. By default assignment operator (=) performs,

 Shallow copy#

•  Deep copy

19. In protected inheritance the public members of base class become ___ in derived class.

•  Public
•  Private

 Protected #

20. Compiler can automatically generates the following constructor/s for a class,

•  Default constructor
•  Copy constructor

 Both of these #

21. ______________ Class is a single class provides functionally to operate on different type of data.