Choose the correct answer

Object Oriented Programming with C++

Inheritance

Evaluation

Choose the correct answers

1. Which of the followingis the process of creating new classes from an existing class

(a) Polymorphism

(b) Inheritance

(c) Encapsulation

(d) super class

2. Which of the following derives a class student from the base class school

(a) school: student

(b) class student : public school

(c) student : public school

(d) class school : public student

3. The type of inheritance that reflects the transitive nature is

(A) Single Inheritance

(B) Multiple Inheritance

(C) Multilevel Inheritance

(D) Hybrid Inheritance

4. Which visibility mode should be used when you want the features of the base class to be available to the derived class but not to the classes that are derived from the derived class?

(A) Private

(B) Public

(C) Protected

(D) All of these

5. Inheritance is process of creating new class from

(A) Base class

(B) abstract

(C) derived class

(D) Function

6. A class is derived from a class which is a derived class itself, then this is referred to as

(A) multiple inheritance

(B) multilevel inheritance

(C) single inheritance

(D) double inheritance

7. Which amongst the following is executed in the order of inheritance?

(A) Destructor

(B) Member function

(C) Constructor

(D) Object

8. Which of the following is true with respect to inheritance?

(A) Private members of base class are inherited to the derived class with private

(B) Private members of base class are not inherited to the derived class with private accessibility

(C) Public members of base class are inherited but not visible to the derived class

(D) Protected members of base class are inherited but not visible to the outsideclass

9. Based on the following class declaration answer the questions (from 9.1 to 9.5 )

class vehicle

{ int wheels;

public:

void input_data(float,float);

void output_data();

protected:

int passenger;

};

class heavy_vehicle : protected vehicle {

int diesel_petrol;

protected:

int load;

protected:

int load;

public:

voidread_data(float,float)

voidwrite_data(); };

class bus: private heavy_vehicle {

charTicket[20];

public:

voidfetch_data(char);

voiddisplay_data(); };

};

9.1. Which is the base class of the class heavy_vehicle?

(a) Bus

(b) heavy_vehicle

(c) vehicle

(d) both (a) and (c)

9.2. The data member that can be accessed from the function displaydata()

(a) passenger

(b) load

(c) Ticket

(d) All of these

9.3. The member function that can be accessed by an objects of bus Class is

(a) input_data() ,

(b) read_data() ,output_data()write_data()

(c) fetch_data()

(d) All of these display_data()

9.4. The member function that is inherited as public by Class Bus

(a) input_data() ,

(b) read_data() , output_data()write_data()

(c) fetch_data()

(d) All of these display_data()

10.

class x

{ int a; public : x()

{}

};

class y

{ x x1; public : y(){} };

class z : public y,x

{

int b; public: z(){} }z1;

What is the order of constructor for object z1 to be invoked?

(A) z , y,x,x

(B) x,y,z,x

(c) y,x,x,z

(D) x,y,z