C++ Programming - References

Exercise :: References - General Questions

6. 

A reference is declared using the _____ symbol.

A. &&
B. &
C. ||
D. !

Answer: Option B

Explanation:

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7. 

Which of the following statement is correct?

A. Once a reference variable has been defined to refer to a particular variable it can refer to any other variable.
B. A reference is indicated by using && operator.
C. Once a reference variable has been defined to refer to a particular variable it cannot refer to any other variable.
D. A reference can be declared beforehand and initialized later.

Answer: Option C

Explanation:

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8. 

Which of the following statements is correct?

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

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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9. 

Which of the following statements is correct?

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

Explanation:

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10. 

Which of the following statement is correct?

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.

Answer: Option B

Explanation:

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