References Questions and Answers updated daily – C++



15 References Questions and answers section with explanation for various online exam preparation, various interviews, C++ References online test. References Questions with detailed description, explanation will help you to master the topic.

References Questions

1.
Which of the following statements is correct?
Pointer to a reference and reference to a pointer both are valid.
When we use reference, we are actually referring to a referent.



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Correct Ans:Both 1 and 2 are correct.
Explanation:


2. Which of the following statement is correct?



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Correct Ans:An array of references is not acceptable.
Explanation:


3. Reference is like a _____.



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Correct Ans:Pointer
Explanation:


4.
Which of the following statements is correct?
We can return a global variable by reference.
We cannot return a local variable by reference.



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Correct Ans:Only 2 is correct
Explanation:


5.
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.



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Correct Ans:Only 1 is correct.
Explanation:


6. Which of the following statement is correct?



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Correct Ans:A referenced does not need to be de-referenced to access a value.
Explanation:


7.
Which of the following statements is correct?

An array of references is acceptable.
We can also create a reference to a reference.



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Correct Ans:Both 1 and 2 are incorrect.
Explanation:


8.
Which of the following statements is correct?

A reference is not a constant pointer.
A referenced is automatically de-referenced.



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Correct Ans:Only 2 is correct.
Explanation:


9. Which of the following statement is correct?



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Correct Ans:Once a reference variable has been defined to refer to a particular variable it cannot refer to any other variable.
Explanation:


10. A reference is declared using the _____ symbol.



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Correct Ans:&
Explanation:


11. Which of the following statement is correct about the references?



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Correct Ans:A reference must always be initialized.
Explanation:


12.
Which of the following statements is correct?

Change a reference changes the referent.
We can create an array of references.



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Correct Ans:Only 1 is correct.
Explanation:


13.
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.



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Correct Ans:Both 1 and 2 are correct.
Explanation:


14.
Which of the following statements is correct?

Once a reference variable has been defined to refer to a particular variable it can refer to any other variable.
A reference is not a constant pointer.



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Correct Ans:Both 1 and 2 are incorrect.
Explanation:


15. Which of the following statement is correct?



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Correct Ans:A reference is stored on stack.
Explanation:


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