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Inheritence - C++ Multiple Choice Questions(MCQs)& Answers
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Free download in PDF c++ inheritence Multiple Choice Questions(MCQs) & Answers. These multiple choice questions on Computer Science are very useful for NIELIT, BCA, B.Sc. MCA, M.Sc. B.Tech, M.Tech, BE, ME students an interview for various positions like Web Developer, System Analyst etc.
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(21) A member declared as ………….. is accessible by the member functions within its class and any class immediately derived from it.
[A] protected
[B] privates
[C] public
[D] friend
Answer: Option [A]
(22) When the base class is publicly inherited, public members of the base class become …………. of the derived class.
[A] private members
[B] protected members
[C] Public members
[D] Not inherite
Answer: Option [C]
(23) In protected derivation, both the public and protected members of the base class become …………. members of the derived class.
[A] protected
[B] private
[C] public
[D] friend
Answer: Option [A]
(24) What will be the order of execution of base class constructors in the following method of inheritance.

class A: public B, public C {….};

What will be the order of execution of base class constructors in the following method of inheritance.

class A: public B, virtual public C {….};

[A] B(); C(); A();
[B] C(); B(); A();
[C] A(); B(); C();
[D] B(); A(); C();
Answer: Option [A]
(25) What will be the order of execution of base class constructors in the following method of inheritance. class A: public B, virtual public C {….};
[A] B(); C(); A();
[B] C(); B(); A();
[C] A(); B(); C();
[D] B(); A(); C();
Answer: Option [B]
(26) While the friend functions and the member functions of a friend class can have direct access to both the private and protected data, the member functions of a derived class can directly access only the ………… data.
[A] protectedd
[B] derived, base
[C] public
[D] friend
Answer: Option [A]
(27) In ……………………. inheritance, the constructors are executed in the order of inheritance.
[A] multipath
[B] multiple
[C] multilevel
[D] hierarchical
Answer: Option [C]
(28) In ……………….. inheritance, the base classes are constructed in the order in which they appear in the deceleration of the derived class.
[A] multipath
[B] multiple
[C] private
[D] multilevel
Answer: Option [B]
(29) ……………….. inheritance may lead to duplication of inherited members from a ‘grandparent’ base class.
[A] multipath
[B] multiple
[C] multilevel
[D] hierarchical
Answer: Option [A]
(30) The member functions of a derived class can directly access only the ……………….. data.
[A] private and protected
[B] private and public
[C] protected and public
[D] private, protected and public
Answer: Option [C]
31 The friend functions and the member functions of a friend class can directly access the ………………. data.
[A] private and protected
[B] private and public
[C] protected and public
[D] private, protected and public
Answer: Option [A]
32 In compile time polymorphism, compiler is able to select the appropriate function for a particular call at the compile time itself, which is known as …………
[A] early binding
[B] static binding
[C] static linking
[D] All of the above
Answer: Option [B]
33 . ……………. binding means that, an object is bound to its function call at compile time.
[A] late
[B] static
[C] dynamic
[D] fixed
Answer: Option [B]
34 C++ supports run time polymorphism with the help of virtual functions, which is called …………….. binding.
[A] dynamic
[B] run time
[C] early binding
[D] static
Answer: Option [A]
35 State whether the following statements about pointers in C++ are True. i) A pointer can be incremented (++) or decremented (–) ii) Any integer can be added to or subtracted from a pointer iii) One pointer can be subtracted from another)
[A] i and ii only
[B] ii and iii only
[C] i and iii only
[D] All i, ii and iii
Answer: Option [D]
36 . ………………. are also known as generic pointers, which refer to variables of any type.
[A] void pointers
[B] null pointers
[C] this pointer
[D] base pointer
Answer: Option [A]
37 The pointers which are not initialized in a program are called ……………..
[A] void pointers
[B] null pointers
[C] this pointer
[D] base pointer
Answer: Option [B]
38 …………………… is useful in creating objects at run time.
[A] void pointer
[B] null pointer
[C] this pointer
[D] object pointerd
Answer: Option [D]
39 A …………………. refers to an object that that currently invokes a member function.
[A] void pointers
[B] null pointers
[C] this pointer
[D] base pointer
Answer: Option [C]
40 The …………………. cannot be directly used to access all the members of the derived class.
[A] void pointers
[B] null pointers
[C] this pointer
[D] base pointern
Answer: Option [D]
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