Discussion
Home ‣ C++ Programming ‣ References Comments
- Question
Which of the following statements is correct?
- We can return a global variable by reference.
- We cannot return a local variable by reference.
Options- A. Only 1 is correct.
- B. Only 2 is correct.
- C. Both 1 and 2 are correct.
- D. Both 1 and 2 are incorrect.
- Correct Answer
- Only 2 is correct.
- 1. 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. Discuss
- 2. 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. Discuss
- 3. 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. Discuss
- 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. Discuss
- 5. Which of the following keyword is used to overload an operator?
Options- A. overload
- B. operator
- C. friend
- D. override Discuss
- 6. Which of the following statements is correct?
- Once the variable and the reference are linked they are tied together.
- Once the reference of a variable is declared another reference of that variable is not allowed.
Options- A. Only 1 is correct.
- B. Only 2 is correct.
- C. Both 1 and 2 are correct.
- D. Both 1 and 2 are incorrect. Discuss
- 7. Reference is like a _____.
Options- A. Pointer
- B. Structure
- C. Macro
- D. Enum Discuss
- 8. Which of the following statement is correct about the references?
Options- A. A reference must always be initialized within functions.
- B. A reference must always be initialized outside all functions.
- C. A reference must always be initialized.
- D. Both A and C. Discuss
- 9. Which of the following statement is correct?
Options- A. A referenced has to be de-referenced to access a value.
- B. A referenced does not need to be de-referenced to access a value.
- C. A referenced has to be double de-referenced to access a value.
- D. Whether a reference should be de-referenced or not depends on the type of the reference. Discuss
- 10. Functions can be declared to return a reference type. There are reasons to make such a declaration/Which of the following reasons are correct?
- The information being returned is a large enough object that returning a reference is more efficient than returning a copy.
- The type of the function must be a R-value.
Options- A. Only 1 is correct.
- B. Only 2 is correct.
- C. Both 1 and 2 are correct.
- D. Both 1 and 2 are incorrect. Discuss
References problems
Search Results
Correct Answer: Derived class pointer cannot point to base class.
Correct Answer: All of the above.
Correct Answer: Both A and B.
Correct Answer: Both A and B.
Correct Answer: operator
Correct Answer: Only 1 is correct.
Correct Answer: Pointer
Correct Answer: A reference must always be initialized.
Correct Answer: A referenced does not need to be de-referenced to access a value.
Correct Answer: Both 1 and 2 are correct.
Comments
There are no comments.More in C++ Programming:
Programming
Copyright ©CuriousTab. All rights reserved.