CS304 Object Oriented Programming Final Term Fall -2012 · CS304 Object Oriented Programming Final Term Fall -2012 4 Public Private Local Protected 4. In OOP's, advantage of inheritance

CS304 Object Oriented Programming

Final Term

Fall-2012

1

1. Which of the following is the way to extract common behaviour and attributes from the

given classes and make a separate class of those common behaviours and attributes?

Generalization (pg 29)

Sub-typing

Specialization

Extension

2. Abstraction is a feature of OOP which enables an object to -------------.

Increase Complexity

Decrease Complexity (pg 21)

Increase Modularity

Decrease Modularity

3. In a class, objects cannot- have common __________.

Behaviour

Attributes

States

Names 4. Which of the following is an example of multiple inheritances?

Student

Woman (Lecture 5)

Mermaid

Train

5. A C++ class is similar to a _________.

Structure (pg65)

Header File

Library File

Function

6. Which of the following is used to free the memory space allocated as a result of object

declaration?

Constructor

New operator

Destructor (pg 81)

Accessor Function

7.________ and ______ methods may not be declared abstract.


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Private,Static

Private,Public

Static,Public

Static, Protected

8. If a static variable is not explicitly initialized at the time of its definition then,

The compiler will give an error message

The compiler will give a warning message

The compiler will initialize it with value Zero. (pg 107 )

The program terminates

9. Object cannot be declared constant if it is required to change the state of its _________.

Constant data members (pg 105)

Non-constant data members

Constant member functions

Static data members

10. A friend function can access a class’s private data without being a ____________.

Static member of the class

None member of the class

Member of the class (pg 135)

Constant member of the class

11. Identify which of the following overloaded operator function’s declaration is appropriate

for the given call?

Rational_number_1 + 2.325 Hint: Where Rational_number_1 is an object of user defined class Rational_number.

Rational_number operator+( Rational_number & obj);

Rational_number operator+(double& obj); (pg 145)

Rational_number operator+(Rational_number &obj, double& num);

operator+(double& obj);

12. A class can be identified from a statement by -------------.

Noun (pg 58)

Pronoun

Verb

Adverb

13. The return type of a constructor is of -------------.

Integer

Character

Double

No type (pg74)

14. Suppose obj1 and obj2 are two objects of a user defined class A. An + operator is

overloaded to add obj1 and obj2 using the function call obj1+obj2.

Identify the correct function prototype against the given call?

A operator + ( A &obj);

int + operator();

int operator (plus) (); (pg 143)

A operator(A &obj3);

15. Abstract classes have ……..object/s, while concrete classes have …………..object/s.

One, One

More than one, more than one


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No, One or more

No, One

16. If MyClass has a destructor its name will be,

MyClass

~MyClass (reference 232)

My~Class

MyClass~

17. A static member function can be called, even when an object is not __________.

Excecute

Define

Instantiated

Mention

18. Consider the following code segment:

void UserInfo (Complex & C1){

C1=C1;

}

It is an example of:

Assignment

Self assignment

Compound assignment

Multiple assignments

19. While overloading the stream insertion operator, the return type must be _________.

Ostream (pg 156)

Istream

Instream

Iostream

20. To overload subscript operator, it requires one _________ type parameter.

Int (pg 160)

Float

Char

String

1. When the base class cannot be replaced by its derived class then it is called,

Sub-typing (pg 31)

Super-typing

Generalization

Specialization

2. Suppose that the Test class does not have an overloaded assignment operator. What

happens when an assignment a=b; is given for two Test objects a and b?

The automatic assignment operator is used

The copy constructor is used

Compiler error

Run-time error

3. By default, which access level is assigned to members of a class?


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Public

Private

Local

Protected

4. In OOP's, advantage of inheritance include all of the given below except,

Provide a useful conceptual framework

Reusing the code (pg 26)

Dealing with real world entities

Decrease maintainability

5. Main problem(s) with multiple inheritances includes _________.

Increased Complexity, Reduced Understanding, Less Reusability

Increased Complexity, Decreased Code Redundancy, Less Reusability

Increased Complexity, Reduced understanding, Duplicate Features (pg45)

Increased Complexity, Less Reusability, Duplicate Features

6. Which is true about sub-typing in case of inheritance?

In sub-typing derived class shows some extended behavior of its parent. (Pg. )

In sub-typing derived class shows some restricted behavior of its parent class.

In sub-typing derived class should be abstract.

Sub-typing has no relation with inheritance

7. The ______ keyword tells the compiler to substitute the code within the function definition

for every instance of a function call.

Virtual

Inline (Pg. 72)

Instance

Static

8. The function that is automatically called when an object of a class is created is named as

_________.

Constructor (Pg. 74)

Destructor

Member Functions

Inline Functions

9. Which will be the good example of a method that is shared by all instances of a class?

Virtual method

Overloaded method

Constant method

Static method (Pg. 108)

10. If you do not initialize static variable of int type then it is

automatically initialized with _________.

0 (Pg. 107)

1

-1

Null

11. Which one is not keyword in C++?

operator


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B_op

const

using

12. We capture the object attributes and behavior in Object Oriented programming using------

---------.

Class (pg 15)

Function

Data Members

Instances


Integer

Character

Double

No type (pg 74)

14. For more than one member in initializes list, then we use ________ to separate them.

Dot (.)

Comma (,) (pg 104)

Colon (:)

Semicolon(;)

15. Assume a class C with objects obj1, obj2, and obj3. For the statement obj3 = obj1 - obj2

to work correctly, if the overloaded - operator must

Take two arguments.

Return a value.

Create a named temporary object.

Take four arguments.

16. To convert from a user-defined class to a basic type, you would most likely use

a conversion operator that’s a member of the class. (pg168)

a built-in conversion operator.

a one-argument constructor.

an overloaded = operator.

17. A generalization-specialization relation between classes are implemented using

Data hiding

Friend classes

Encapsulation

Inheritance (pg 49)

18. Operator overloading is:

Making C++ operators able to work with objects.

Giving C++ operators more than they can handle. (pg 139)

Giving new meanings to existing Class members.

Making new C++ operators.

19. The life of sub object is dependant on the life of master class in _____________.

Separation

Composition (Pg. 120)

Aggregation

Association

20. __________ operator will take only one operand.

New

Const

Int


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This

1. Which one of the following features of OOP is used to deal with only relevant details?

Abstraction (pg 23)

Information hiding

Object

Inheritance

2. Inheritance is a way to

make general classes into more specific classes. (pg 27)

pass arguments to objects of classes.

improve data hiding and encapsulation.

providing class growth through natural selection.

3. Consider the code below,

class Fred {

public:

Fred();

...

};

int main()

{

Fred a[10];

Fred* p = new Fred[10];

...

}

Select the best option,

A) Fred a[10]; calls the default constructor 09 times

Fred* p = new Fred[10]; calls the default constructor 10 times

B) Produce an error

C) Fred a[10]; calls the default constructor 11 times

Fred* p = new Fred[10]; calls the default constructor 11 times (Pg. 175)

D) Fred a[10]; calls the default constructor 10 times

Fred* p = new Fred[10]; calls the default constructor 10 times

4. Which operator can not be overloaded?

The relation operator ( >= )

Assignment operator ( = )

Script operator ( [] )

Conditional operator (? : ) (pg 141)

5. Abstraction is a feature of OOP which enables an object to -------------.

Increase Complexity

Decrease Complexity

Increase Modularity

Decrease Modularity

6. Composition is an example of _________ relationship.

Simple

Complex

Strong (Pg. 53)

Weak

7. Consider a class having name MyClass, what will be the name of this class constructor ?


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MyClass

Myclass

myClass

myclass


_________.


Destructor

Member Functions

Inline Functions

9. The const member functions uses following specifers __________.

Only access

Only read (Pg. 100)

Access and read only

Access, read, and modify

10. The life of sub object is not dependant on the life of master class in ___________.

Composition

Aggregation (pg 134)

Separation

Abstraction

11. Friend functions are ____________ functions of a class.

Object member

Member

Non-member (pg 136)

Static member





int + operator(); (pg 143)

int operator (plus) ();



Data hiding

Friend classes

Encapsulation

Inheritance (pg 49)

14. A real world object’s attributes are represented through,

Member function

Data members(Pg. 14)

Global variables

Const data members

15. Why we should avoid the use of friend function/class?

Friend function/class minimizes encapsulation (Pg. 153)

Difficult to use

Decreases complexity

Increase program code size

16. Which of the following is NOT an advantage of information hiding?

Simplifies the model


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Restriction to change

Prevents damage from errant external code

Provide direct access to data members

17. Assume that a user wants to count, how many objects are created for a particular class,

which one will be most suitable to perform this task:

Const data member

Non static data member

Static data member

Global data member

18. ___________, which means if A declares B as its friend it does NOT mean that A can

access private data of B. It only means that B can access all data of A.

Friendship is one way only (Pg.292 )

Friendship is two way only

NO Friendship between classes

Any kind of friendship



C1=C1;

}


Assignment

Self assignment (Pg. 151)

Compound assignment

Multiple assignment

20. Subscript operator must be ________ of the class when overloaded.

Static function

Virtual function

Member function (pg 160)

Non member function

1. What is a class?

A class is a section of computer memory containing objects.

A class is a section of the hard disk reserved for object oriented programs

A class is the part of an object that contains the variables.

A class is a description of a kind of object.





Compiler error

Run-time error

3. Consider the following statement. "Cupboard has books"

What is the relationship between Cupboard and books?


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Fall-2012

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Composition

Aggregation (Pg. 54)

Inheritance

Association

4. Which of the following is directly related to polymorphism?

Const members

Overriding (pg )

Static members

Const members functions

5. The constructor of a class is called when --------------.

An object is change its state

An object is executed

An object is created (pg 74)

An object is destroyed

6. Which will be the good example of a method that is shared by all

instances of a class?

Virtual method

Overloaded method

Constant method

Static method


Only access

Only read (Pg. 100)

Access and read only


8. Friend functions are ____________ functions of a class.

Object member

Member

Non-member (pg 136)

Static member


Integer

Character

Double

No type (Pg. 74)


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10. For more than one member in initializer list, then we use ________ to separate them.

Dot (.)

Comma (,) (Pg. 104)

Colon (:)

Semicolon(;)

11. Given the following class

class Base{

int Age=33;

}

How you can improve above class with respect to accessing the field Age?

Define the variable Age as private

Define the variable Age as protected

Define the variable Age as private and create a get method that returns it and a set method

that updates it

Define the variable Age as protected and create a set method that returns it and a get method

that updates it

12. A normal C++ operator that acts in special ways on newly defined data types is said to be

Glorified.

Encapsulated.

Classified.

Overloaded.

13. To convert from a user-defined class to a basic type, you would most likely use

a conversion operator that’s a member of the class.

a built-in conversion operator.

a one-argument constructor.

an overloaded = operator.


Data hiding

Friend classes

Encapsulation

Inheritance (Pg. 49)

15. Abstract classes have……..object/s, while concrete classes have …………..object/s.

One, One

More than one, more than one

No, One or more (Pg. 229)

No, One

16. Hiding details of an object from the other parts of a program is done by which principle

of OOP?

Obfustication

Data Mining

Compilation

Encapsulation (pg 16)


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11

17. Graphical representation of the classes and objects is called object model it shows ----

---.

Class name, Attributes, States, Operations

Class name, Attributes, Operations, Methods

Class name, Attributes, Operations, Behaviour

Class name, Attributes, Operations, Relationship

18. Consider the following function:

void multiplication (int x, int y);

If we overloaded the above function, then it will require ………. operands.

One

Two

Three

Four



C1=C1;

}


Multiple assignment

Assignment

Self assignment (Pg. 151)

Compound assignment

20. While overloading the stream extraction operator, the return type must be _________.

Ostream

Iostream

Istream

Instream

1.Which one of the following is not a major element of an Object Model?

Abstraction

Encapsulation

Persistence

Hierarchy

2. Encapsulation is a feature of Object Oriented Programming which means,

Keep data separated from code

Keep data and code in a single place (Pg. )

Keep data separated from code and also keep data and code in a single place

Reusing code by creating new classes from previously created classes

3. Reusability can be achieved through __________.

Inheritance

Aggregation

Association

Abstraction

4. Which of the following is directly related to polymorphism?


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Const members

Overriding

Static members

Const members functions

5. Which of the class’s members are available to every one?

Public

Private

Protected

Internal

6. A member function having the same name as the class name preceded by a tilde (~) sign is

called _______.

Constructor

Getter

Setter

Destructor (pg 92)


declaration?

Constructor

New operator

Destructor (Pg. 81)

Accessor Function

8. __________ provide the facility to access the data member.

Accesser function (pg 68)

Private function

Inline function

Constructor

9. What will be the value of the variable data and data2 respectively, If

the function below is called 4 times?

void func()

{

static int data = 4;

int data2 = 4;

++data;

++data2;

}

8, 5

5, 8

5, 5

7, 5

10. In ____________, a pointer or reference to an object is created inside a class.


Composition

Separation

Association


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11. Identify which of the following overloaded operator function’s declaration is appropriate

for the given call?

Rational_number_1 + 2.325 Hint: Where Rational_number_1 is an object of user defined class Rational_number.

Rational_number operator+( Rational_number & obj);

Rational_number operator+(double& obj); (Pg. 145)

Rational_number operator+(Rational_number &obj, double& num);

operator+(double& obj);

12. We capture the object attributes and behavior in Object Oriented programming using------

---------.

Instances

Class (pg 15)

Function

Data Members

13. A normal C++ operator that acts in special ways on newly defined data types is said to be

Glorified.

Encapsulated.

Classified.

Overloaded.





int + operator();

int operator (plus) (); (pg 143)



Data hiding

Friend classes

Encapsulation

Inheritance (pg 49)

16. The technique in which we visualize our programming problems according to real life’s

problems is called_________.

Structured programming

Object oriented programming (pg 9)

Procedural programming

Sequential programming

17. How many objects for a class can be constructed in an application?

Only one per constructor.

As many as the application asks for.

Only one per class.

One object per variable.

18. We ………… change the evaluation precedence of operators through operator

overloading.


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Can

Can not

Only

Just

19. Subscript operator must be ________ of the class when overloaded.

Static function

Virtual function

Member function (Pg. 160)

Non member function

20. friend Complex & operator -(Complex & t);

It is the declaration of:

Unary minus member function

Unary minus non member function

Unary minus static member function

Unary minus non static member function

1. Inheritance is a way to

organize data.

pass arguments to objects of classes.

add features to existing classes without rewriting them. (pg 27)

improve data-hiding and encapsulation.

2. The ability to derive a class from more than one classes is called,

Single inheritance

Encapsulation

Multiple inheritance

Polymorphism

3. For classes with common behavior, you can save effort by placing the common behavior in

a __________.

Derived Class

Base class (pg 29)

Deprived Class

Named class

4. If Rollno is a const data member of a class student then which definition is correct for the

member function show ()

int show() const { return Rollno; }

void show() const { return Rollno; }

int show() const { return Rollno + 50; }

int show(num) const { Rollno = num; }

5. An overloaded operator always requires __________ argument than its number of

operands.

One less (pg 896)

One most

Two less

Three most

6. Which of the following is a weak relationship between two objects?

Inheritance

Composition

Aggregation


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Association

7.The constructor of a class is called when --------------.

An object is change its state

An object is executed

An object is created

An object is destroyed


_________.


Destructor

Member Functions

Inline Functions


declaration?

Constructor

New operator

Destructor (Pg. 92)

Accessor Function

10. Separation of implementation from interface provides the facility to restrict the

_________ from direct access.

Data member

Data function

Class

Object (Pg. 19)

11. "This pointer" does not pass implicitly to __________ functions.

Static member (Pg. 114)

Non-static member

Instance member

Constant member

12. In ____________, a pointer or reference to an object is created inside a class.


Composition

Separation

Association

13. A class can be identified from a statement by -------------.

Noun

Pronoun

Verb

Adverb

14. By default all members of a class are,

Public

Protected

Private

Public & protected

15. Graphical representation of the classes and objects is called object model it shows -------.






Final Term

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Friend function/class minimizes encapsulation

Difficult to use



17. Operator overloading is:

Making C++ operators able to work with objects.

Giving C++ operators more than they can handle.

Giving new meanings to existing Class members.

Making new C++ operators.

18. Which of the following operator can not be overloaded?

Scope resolution operator ( :: ) (pg 141)

Insertion operator ( << )

Extraction operator ( >> )

The relation operator ( > )

19 Consider the following code segment:


C1=C1;

}


Assignment

Self assignment

Compound assignment

Multiple assignment

20.Subscript operator must be ________ of the class when overloaded.

Static function

Virtual function

Member function

Non member function

1. Which one of the following features of OOP is used to derive a class from another?

Encapsulation

Polymorphism

Data hiding

Inheritance (pg 25)

2. Which sentence clearly defines an object?

one instance of a class.

another word for a class.

a class with static methods.

a method that accesses class attributes.

3. If Rollno is a const data member of a class student then which definition is correct for the

member function show ()

int show() const { return Rollno; }

void show() const { return Rollno; }

int show() const { return Rollno + 50; }

int show(num) const { Rollno = num; }






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Compiler error

Run-time error

5. Abstract class has _______.

Zero Instances (there is no object)

One Instance

Two Instances

Many Instances

6. Consider a class having name MyClass, what will be the name of this class constructor ?

MyClass

Myclass

myClass

myclass


declaration?

Constructor

New operator

Destructor

Accessor Function


Only access

Only read

Access and read only (Pg. 106)


9. What will be the value of the variable data and data2 respectively, If the function below is

called 4 times?

void func()

{

static int data = 4;

int data2 = 4;

++data;

++data2;

}

8, 5

5, 8

5, 5

7, 5

10. Object cannot be declared constant if it is required to change the state of its _________.

Constant data members

Non-constant data members

Constant member functions

Static data members

11. In order to free the memory occupied by the object, we use -------------

.

Constructor

Destructor

Shallow Copy


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Fall-2012

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Deep Copy

12. The property in which existing class is modified to form a new class

is called………..

Polymorphism

Inheritance

Encapsulation

Information hiding

13. In inheritance hierarchy which one is on the top?

Subtyping

Specialization

Extension

Generalization

14. Graphical representation of the classes and objects is called object

model it shows -------.






Friend function/class minimizes encapsulation

Difficult to use



16. In the following operators, the _____ operator can be overloaded.

%

##

?:

.

17. C2+C1 is equivalent to ___________, when plus operator is overloaded,

and C2, C1 are objects.

C1.operator + (C2)

C1.operator + (C1)

C2.operator + (C1)

C2.operator + (C2)

18.Consider the following code segment:



Final Term

Fall-2012

19

C1=C1;

}


Assignment

Self assignment

Compound assignment

Multiple assignment

19. To overload subscript operator, it requires one _________ type parameter.

Int

Float

Char

String

20. Friend Complex & operator -(Complex & t);

It is the declaration of:

Unary minus member function

Unary minus non member function (Pg. 162)

Unary minus static member function

Unary minus non static member function

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CS304 Object Oriented Programming Final Term Fall -2012 · CS304 Object Oriented Programming Final Term Fall -2012 4 Public Private Local Protected 4. In OOP's, advantage of inheritance