C++ Programming - References

Exercise :: References - General Questions

11. 

Which of the following statements is correct?

  1. Once the variable and the reference are linked they are tied together.
  2. Once the reference of a variable is declared another reference of that variable is not allowed.

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

Answer: Option A

Explanation:

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12. 

Which of the following statements is correct?

  1. We can return a global variable by reference.
  2. We cannot return a local variable by reference.

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

Answer: Option B

Explanation:

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13. 

Reference is like a _____.

A. Pointer
B. Structure
C. Macro
D. Enum

Answer: Option A

Explanation:

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14. 

Which of the following statement is correct?

A. A reference is a constant pointer.
B. A reference is not a constant pointer.
C. An array of references is acceptable.
D. It is possible to create a reference to a reference.

Answer: Option A

Explanation:

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15. 

Which of the following statement is correct?

A. A reference is declared using * operator.
B. Once a reference variable has been defined to refer to a particular variable it can refer to any other variable.
C. A reference must always be initialized within classes.
D. A variable can have multiple references.

Answer: Option D

Explanation:

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