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- Question
Which of the following statement is correct about constructors?
Options- A. A constructor has a return type.
- B. A constructor cannot contain a function call.
- C. A constructor has no return type.
- D. A constructor has a void return type.
- Correct Answer
- A constructor has no return type.
- 1. A __________ is a constructor that either has no parameters, or if it has parameters, all the parameters have default values.
Options- A. default constructor
- B. copy constructor
- C. Both A and B
- D. None of these Discuss
- 2. __________ used to make a copy of one class object from another class object of the same class type.
Options- A. constructor
- B. copy constructor
- C. destructor
- D. default constructor Discuss
- 3. Copy constructor must receive its arguments by __________ .
Options- A. either pass-by-value or pass-by-reference
- B. only pass-by-value
- C. only pass-by-reference
- D. only pass by address Discuss
- 4. If the copy constructor receives its arguments by value, the copy constructor would
Options- A. call one-argument constructor of the class
- B. work without any problem
- C. call itself recursively
- D. call zero-argument constructor Discuss
- 5. A union that has no constructor can be initialized with another union of __________ type.
Options- A. different
- B. same
- C. virtual
- D. class Discuss
- 6. Constructors __________ to allow different approaches of object construction.
Options- A. cannot overloaded
- B. can be overloaded
- C. can be called
- D. can be nested Discuss
- 7. How many default constructors per class are possible?
Options- A. Only one
- B. Two
- C. Three
- D. Unlimited Discuss
- 8. To ensure that every object in the array receives a destructor call, always delete memory allocated as an array with operator __________ .
Options- A. destructor
- B. delete
- C. delete[]
- D. kill[]
- E. free[] Discuss
- 9. Which of the following gets called when an object goes out of scope?
Options- A. constructor
- B. destructor
- C. main
- D. virtual function Discuss
- 10. Which of the following cannot be declared as virtual?
Options- A. Constructor
- B. Destructor
- C. Data Members
- D. Both A and C Discuss
Constructors and Destructors problems
Search Results
Correct Answer: default constructor
Correct Answer: copy constructor
Correct Answer: only pass-by-reference
Correct Answer: call itself recursively
Correct Answer: same
Correct Answer: can be overloaded
Correct Answer: Only one
Correct Answer: delete[]
Correct Answer: destructor
Correct Answer: Both A and C
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