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Total Questions: 20

1. If a const object calls a non-const member function then ____________________

A. Run time error may get produced

B. Compile time error may get produced

C. Either compile time or run time error is produced

D. The program can’t be compiled

Correct Answer is : Compile time error may get produced

2. Can a constructor function be constant?

A. Yes, always

B. Yes, only if permissions are given

C. No, because objects are not involved

D. No, never

Correct Answer is : No, never

3. A function can have both the const and non-const version in the same program.

A. TRUE

B. FALSE

Correct Answer is : TRUE

4. How is it possible to have both const and non-const version of a function?

A. Function overriding

B. Function prototyping

C. Function overloading

D. Function declaring

Correct Answer is : Function overloading

5. When both the const and non-const version of a functions are required?

A. Return value have to be different in const

B. Return value have to be same in const

C. Return values have to be ignored

D. Return values have to be suppressed

Correct Answer is : Return value have to be different in const

6. If a function is to be made const, which is the correct syntax?

A. const functionName(parameters);

B. const returnType functionName(parameters);

C. const functionName(returnType)(Parameters);

D. const (functionName(parameters));

Correct Answer is : const returnType functionName(parameters);

7. Functions which differ in const-ness are considered ______________________

A. To have same signature

B. To have different signature

C. To produce compile time error

D. To produce runtime error

Correct Answer is : To have different signature

8. If const version of a function when overloading is used, the function ___________________

A. Returns reference to object

B. Returns volatile reference

C. Returns mutable reference

D. Returns const reference

Correct Answer is : Returns const reference

9. Which among the following is recommended for const functions?

A. Const function use should be reduced in a program

B. Const function use should be more in a program

C. Const function use should not matter in a program

D. Const function use should be able to modify the values

Correct Answer is : Const function use should be more in a program

10. Use of const member function in a program _________________________

A. Is mandatory, always

B. Is optional, always

C. Is mandatory, if objects are used

D. Is optional, if const objects are used

Correct Answer is : Is optional, always

11. Which among the following is called first, automatically, whenever an object is created?

A. Class

B. Constructor

C. New

D. Trigger

Correct Answer is : Constructor

12. Which among the following is not a necessary condition for constructors?

A. Its name must be same as that of class

B. It must not have any return type

C. It must contain a definition body

D. It can contains arguments

Correct Answer is : It must contain a definition body

13. Which among the following is correct?

A. class student{ public: int student(){} };

B. class student{ public: void student (){} };

C. class student{ public: student{}{} };

D. class student{ public: student(){} };

Correct Answer is : class student{ public: student(){} };

14. In which access should a constructor be defined, so that object of the class can be created in any function?

A. Public

B. Protected

C. Private

D. Any access specifier will work

Correct Answer is : Public

15. How many types of constructors are available for use in general (with respect to parameters)?

A. 2

B. 3

C. 4

D. 5

Correct Answer is : 2

16. If a programmer defines a class and defines a default value parameterized constructor inside it. He has not defined any default constructor. And then he try to create the object without passing arguments, which among the following will be correct?

A. It will not create the object (as parameterized constructor is used)

B. It will create the object (as the default arguments are passed )

C. It will not create the object ( as the default constructor is not defined )

D. It will create the object ( as at least some constructor is defined )

Correct Answer is : It will create the object (as the default arguments are passed )

17. Default constructor must be defined, if parameterized constructor is defined and the object is to be created without arguments.

A. TRUE

B. FALSE

Correct Answer is : TRUE

18. If class C inherits class B. And B has inherited class A. Then while creating the object of class C, what will be the sequence of constructors getting called?

A. Constructor of C then B, finally of A

B. Constructor of A then C, finally of B

C. Constructor of C then A, finally B

D. Constructor of A then B, finally C

Correct Answer is : Constructor of A then B, finally C

19. In multiple inheritance, if class C inherits two classes A and B as follows, which class constructor will be called first: class A{ }; class B{ }; class C: public A, public B{ };

A. A()

B. B()

C. C()

D. Can’t be determined

Correct Answer is : A()

20. Which among the following is true for copy constructor?

A. The argument object is passed by reference

B. It can be defined with zero arguments

C. Used when an object is passed by value to a function

D. Used when a function returns an object

Correct Answer is : It can be defined with zero arguments