COM defines an API to allow for the creation of components for use in integrating custom applications or to allow diverse components to interact.
But in order to interact, components must adhere to a binary structure specified by Microsoft.
As long as components adhere to this binary structure, components written in different languages can interoperate.
Which of the following statement is correct? 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.
Destructors __________ for automatic objects if the program terminates with a call to function exit or function abort. A. are called B. are inherited C. are not called D. are created
A class's __________ is called when an object is destroyed. A. constructor B. destructor C. assignment function D. copy constructor
Which of the following statements are correct? A. Constructor is always called explicitly. B. Constructor is called either implicitly or explicitly, whereas destructor is always called implicitly. C. Destructor is always called explicitly. D. Constructor and destructor functions are not called at all as they are always inline.
For automatic objects, constructors and destructors are called each time the objects A. enter and leave scope B. inherit parent class C. are constructed D. are destroyed
Which of the following statement is correct? A. Constructor has the same name as that of the class. B. Destructor has the same name as that of the class with a tilde symbol at the beginning. C. Both A and B. D. Destructor has the same name as the first member function of the class.
Which constructor function is designed to copy objects of the same class type? A. Create constructor B. Object constructor C. Dynamic constructor D. Copy constructor
How many times a constructor is called in the life-time of an object? A. Only once B. Twice C. Thrice D. Depends on the way of creation of object
Which of the following statement is incorrect? A. Constructor is a member function of the class. B. The compiler always provides a zero argument constructor. C. It is necessary that a constructor in a class should always be public. D. Both B and C.
Copy constructor must receive its arguments by __________ . A. either pass-by-value or pass-by-reference B. only pass-by-value C. only pass-by-reference D. only pass by address
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