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Home ‣ C++ Programming ‣ Constructors and Destructors See What Others Are Saying!
- Question
A class's __________ is called when an object is destroyed.
Options- A. constructor
- B. destructor
- C. assignment function
- D. copy constructor
- Correct Answer
- destructor
- 1. Which of the following is the correct class of the object cout?
Options- A. iostream
- B. istream
- C. ostream
- D. ifstream Discuss
- 2. Which of the following statements regarding inline functions is correct?
Options- A. It speeds up execution.
- B. It slows down execution.
- C. It increases the code size.
- D. Both A and C. Discuss
- 3. Which of the following is a mechanism of static polymorphism?
Options- A. Operator overloading
- B. Function overloading
- C. Templates
- D. All of the above Discuss
- 4. Which of the following access specifier is used as a default in a class definition?
Options- A. protected
- B. public
- C. private
- D. friend Discuss
- 5. Which of the following approach is adapted by C++?
Options- A. Top-down
- B. Bottom-up
- C. Right-left
- D. Left-right Discuss
- 6. Which of the following is correct about class and structure?
Options- A. class can have member functions while structure cannot.
- B. class data members are public by default while that of structure are private.
- C. Pointer to structure or classes cannot be declared.
- D. class data members are private by default while that of structure are public by default. Discuss
- 7. Which of the following statement is incorrect?
Options- A. The default value for an argument can be a global constant.
- B. The default arguments are given in the function prototype.
- C. Compiler uses the prototype information to build a call, not the function definition.
- D. The default arguments are given in the function prototype and should be repeated in the function definition. Discuss
- 8. Which of the following statement is correct?
Options- A. A constructor of a derived class can access any public and protected member of the base class.
- B. Constructor cannot be inherited but the derived class can call them.
- C. A constructor of a derived class cannot access any public and protected member of the base class.
- D. Both A and B. Discuss
- 9. Which of the following statements about virtual base classes is correct?
Options- A. It is used to provide multiple inheritance.
- B. It is used to avoid multiple copies of base class in derived class.
- C. It is used to allow multiple copies of base class in a derived class.
- D. It allows private members of the base class to be inherited in the derived class. Discuss
- 10. Which of the following statement is correct about the program given below?
#include<iostream.h> int main() { int x = 10, y = 20; int *ptr = &x; int &ref = y; *ptr++; ref++; cout<< x << " " << y; return 0; }
Options- A. The program will print the output 10 20.
- B. The program will print the output 10 21.
- C. The program will print the output 11 20.
- D. The program will print the output 11 21.
- E. It will result in a compile time error. Discuss
More questions
Correct Answer: ostream
Correct Answer: Both A and C.
Correct Answer: All of the above
Correct Answer: private
Correct Answer: Bottom-up
Correct Answer: class data members are private by default while that of structure are public by default.
Correct Answer: The default arguments are given in the function prototype and should be repeated in the function definition.
Correct Answer: Both A and B.
Correct Answer: It is used to avoid multiple copies of base class in derived class.
Correct Answer: The program will print the output 10 21.
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