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OOPS Concepts problems
1. Which of the following is an invalid visibility label while inheriting a class?
Options
A.
public
B.
private
C.
protected
D.
friend
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Correct Answer:
friend
2. Which inheritance type is used in the class given below?
class A : public X, public Y
{}
Options
A. Multilevel inheritance
B. Multiple inheritance
C. Hybrid inheritance
D. Hierarchical Inheritance
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Correct Answer: Multiple inheritance
3. Which of the following keyword is used to overload an operator?
Options
A.
overload
B.
operator
C.
friend
D.
override
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Correct Answer:
operator
4. What will happen if a class is not having any name?
Options
A. It cannot have a destructor.
B. It cannot have a constructor.
C. It is not allowed.
D. Both A and B.
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Correct Answer: Both A and B.
5. What is correct about the static data member of a class?
Options
A. A static member function can access only static data members of a class.
B. A static data member is shared among all the object of the class.
C. A static data member can be accessed directly from
main()
.
D. Both A and B.
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Correct Answer: Both A and B.
6. Why reference is not same as a pointer?
Options
A. A reference can never be null.
B. A reference once established cannot be changed.
C. Reference doesn't need an explicit dereferencing mechanism.
D. All of the above.
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Correct Answer: All of the above.
7. Which of the following statements is correct?
Options
A. Base class pointer cannot point to derived class.
B. Derived class pointer cannot point to base class.
C. Pointer to derived class cannot be created.
D. Pointer to base class cannot be created.
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Correct Answer: Derived class pointer cannot point to base class.
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More in C++ Programming:
Constructors and Destructors
Functions
Objects and Classes
OOPS Concepts
References