Question: 6 -

Which of the following can be overloaded?

Operators

None of the above

Object

Both Object & Operators

Answer:

Both Object & Operators

Solution:

Object and Operators can be overloaded.

Question: 7 -

What happens when we try to compile the class definition in following code snippet?

class Birds {};
class Peacock : protected Birds {};

It will not compile because a class cannot be protectedly inherited from other class.

It will not compile because class body of Peacock is not defined.

It will compile succesfully.

It will not compile because class body of Birds is not defined.

Answer:

It will compile succesfully.

Solution not available.

Question: 8 -

Which is also called as abstract class?

Derived class

Pure virtual function

Virtual function

None of the mentioned

Answer:

Pure virtual function

Solution:

Classes that contain at least one pure virtual function are called as abstract base classes.

Question: 9 -

Which of the following is true?

Objects of a class do not share non-static members. Every object has its own copy

All objects of a class share all data members of class

None of these

Objects of a class do not share codes of non-static methods, they have their own copy

Answer:

Objects of a class do not share non-static members. Every object has its own copy

Solution:

very object maintains a copy of non-static data members. For example, let Student be a class with data members as name, year, batch. Every object of student will have its own name, year and batch. On a side note, static data members are shared among objects. All objects share codes of all methods

Question: 10 -

What will be the output of the following program?

         
Note:Includes all required header files
class course
{
    int x, y; 
    public:
    course(int xx)
    {
        x = ++xx;
    }
    void Display()
    {
        cout<< --x << " ";
    }
};
int main()
{
    course obj(20);
    obj.Display();
    int *p = (int*)&obj ;
    *p = 5;
    obj.Display();
    return 0; 
}

21 4

20 4

21 5

20 5

Answer:

20 4

Solution not available.