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References Questions And Answers.

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Exercise :: References
1.Which of the following statement is correct?
A. A reference is stored in a binary tree.
B. A reference is stored in a queue.
C. A reference is stored on stack.
D. A reference is stored on heap.
2.Which of the following statements is correct?

1. Once a reference variable has been defined to refer to a particular variable it can refer to any other variable.

2. A reference is not a constant pointer.

A. Only 1 is correct.
B. Only 2 is correct.
C. Both 1 and 2 are correct.
D. Both 1 and 2 are incorrect.
3.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.

A. Only 1 is correct.
B. Only 2 is correct.
C. Both 1 and 2 are correct.
D. Both 1 and 2 are incorrect.
4.Which of the following statements is correct?

Change a reference changes the referent.

We can create an array of references.

A. Only 1 is correct.
B. Only 2 is correct.
C. Both 1 and 2 are correct.
D. Both 1 and 2 are incorrect.
5.Which of the following statement is correct about the references?
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.