Object Oriented Programming interview questions part 28
Object Oriented Programming interview questions part 28
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Total Questions: 20
1. If a declaration of a member in inner class has the same name as that in the outer class, then ________________ enclosing scope.
Correct Answer is : Inner declaration shadows outer declaration in
2. A static nested class is _____________ class in behavior that is nested in another _________ class.
Correct Answer is : Top level, top level
3. What is new operator?
Correct Answer is : Allocates memory for an object or array and returns a particular pointer
4. Microsoft C++ Components extensions support new keyword to _____________
Correct Answer is : Add new vtable slot entries
5. What happens when new fails?
Correct Answer is : Either throws an exception or returns zero
6. If new throws an error, which function can be called to write a custom exception handler?
Correct Answer is : _set_new_handler
7. In C++, if new operator is used, when is the constructor called?
Correct Answer is : After the allocation of memory
8. Which among the following is correct syntax to declare a 2D array using new operator?
Correct Answer is : char (*pchar)[10] = new char[][10];
9. For declaring data by using new operator ____________________
Correct Answer is : Type name can’t contain const, volatile, class declaration or enumerations
10. The new operator _____________
Correct Answer is : Doesn’t allocate reference types
11. Which among the following is true?
Correct Answer is : New operator can’t allocate functions but pointer to functions can be allocated
12. Which among the following is added in grammar of new operator?
Correct Answer is : Initializer
13. Initializers __________________
Correct Answer is : Can’t be specified for arrays
14. The objects allocated using new operator ________________
Correct Answer is : Are not destroyed even if they go out of scope
15. The new operator _________________
Correct Answer is : Invokes function operator new
16. If new operator is defined for a class and still global new operator have to be used, which operator should be used with the keyword new?
Correct Answer is : Scope resolution
17. How does compiler convert “::operator new” implicitly?
Correct Answer is : ::operator new( sizeof( type ) )
18. What is array of objects?
Correct Answer is : An array of instances of class represented by single name
19. Which among the following is a mandatory condition for array of objects?
Correct Answer is : All the objects should be of same class
20. What is the type of the elements of array of objects?
Correct Answer is : Class
