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C++ Programming - References

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Exercise

"We cannot solve our problems with the same thinking we used when we created them."
- Albert Einstein
1. 

Which of the following statement is correct?
A. A reference is stored on heap.
B. A reference is stored on stack.
C. A reference is stored in a queue.
D. A reference is stored in a binary tree.
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?

  1. The information being returned is a large enough object that returning a reference is more efficient than returning a copy.
  2. 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?

  1. Change a reference changes the referent.
  2. 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.

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