Self Test Questions

Chapter I: Principles of Object-Oriented Programming

1. Which of the following languages is not a procedure-oriented programming language? a) ALGOL b) COBOL c) FORTRAN d) None of the above

2. Which of the following programming approach used functions as a key concept to

perform action-oriented tasks? a) Structured programming b) Modular programming c) Procedure-oriented programming d) Object-oriented programming

3. Identify the drawback of using procedure-oriented programming, if any:

a) Data is hidden from external functions b) New functions can be added whenever necessary c) Does not reflect real world problems d) All of the above

4. Which is not associated with Object-oriented programming?

a) Data abstraction b) Automatic initialization c) Dynamic binding d) None

5. The term operator overloading in C++ refers to:

a) Inheritance b) Message passing c) Polymorphism d) None

6. Which one of the following OOP concepts enables reusability of components?

a) Inheritance b) Encapsulation c) Polymorphism d) All of the above

7. The concept of hierarchical classification is related to:

a) Abstraction b) Inheritance c) Function overloading d) None

8. Object-based programming languages do not support:

i. Inheritance ii. Dynamic binding iii. Encapsulation iv. All of the above

a) Both i and ii b) iii only c) iv only d) i, ii, and iii

9. C++ does not support

i. Genericity ii. Early binding iii. Garbage collection iv. Multiple Inheritance

a) i only b) ii only c) iii only d) ii, iii and iv

10. Which of the following is an Object-oriented programming language?

i. Smalltalk ii. Object Pascal iii. Java iv. All of the above

a) Both ii and iii b) i only c) iii only d) iv only

Chapter II: Beginning With C++

1. Which one of the following options is true on the topic of Simula67?

i. It is the first Object-oriented programming language

ii. It’s a predecessor to C++

iii. It was designed for doing simulations

iv. All of the above

a) Both i and ii

b) i only

c) iii only

d) iv only

2. Which of the following features that distinguish object oriented programming from other

conventional programming?

i. Structural design

ii. Inheritance

iii. Modular programming

iv. bottom-up

a) i only

b) Both ii and iii

c) Both ii and iv

d) iv only

3. Comments in C++ starts with _______ symbol.

a) //

b) \\

c) **

d) None of the above

4. The insertion operator is another name for

a) input operator

b) output operator

c) extraction operator


5. Which header file in C++ does contain function prototypes for memory allocation?

a) <iostream.h>

b) <stdio.h>

c) <stdlib.h>

d) <limits.h>

6. What is the output of the following code?

int n=10;

while (n<10)

cout<< “Number:”<<n+1;

a) 10

b) 11

c) No output


7. Which of the following statements require the header file <math.h> to be included?

a) a=b/c;

b) cout << a;

c) c=sqrt(a);

d) Both a and c

8. Identify the error, if any: char str_name ‘a‘;

a) str_name is not a valid variable name

b) Variables cannot be initialized at the time of declaration

c) Missing = sign between str_name and ‘a’

d) No error

9. Name the library that must be included while using cin.

a) <iomanip.h>

b) <iostream.h>

c) <ctype.h>

d) <stdlib.h>

10. A C++ program structure is based on the concept of

a) Client-server model

b) N-Tier model

c) Both a and b


Chapter III: Tokens, Expressions and Control Structures

1. return is an example of a

a) Keyword

b) Function

c) Statement

d) Comment

2. Which of the following is not a keyword?

i. for

ii. friend

iii. virtual

iv. private

a) i only

b) Both ii and iii

c) Both i and iv

d) ii, iii and iv

3. Identify the valid variable name from the following:

i. char

ii. var_name

iii. _varname

iv. str_name2

a) Both i and iii

b) Both ii and iv

c) ii, iii, and iv

d) i only

4. Which of the following is not a user-defined data type?

a) array

b) structure

c) union

d) class

5. Write the equivalent C++ statement for the following expression,

X= ba *c/d

a) X=sqrt(a+b) *(c/d);

b) X=(squareroot(a+b)*c)/d;

c) X=( )( ba * c)/d;


6. The statement int main() is a ___________.

a) function prototype

b) function call

c) function header line


7. The declaration of global variables must be made

a) inside the function

b) outside the function

c) in a function header line


8. Identify the error, if any:

double avg=tot/n;

a) Declaration should not contain any expression

b) Initialization cannot be done in the declaration statement

c) Dynamic initialization is not possible

d) No error

9. Which of the following is true about scope resolution operator?

a) Qualifies a namespace member to its namespace

b) Allows you to access a global variable

c) Qualifies the hidden variable

d) All of the above

10. Which of the following is not a member-dereferencing operator?

a) ::*

b) ::

c) *

d) *

11. Which of the following is true about new operator?

i. While using new operator, sizeof() operator is not needed

ii. It is also not necessary to use cast operator

iii. new operator can be overloaded

iv. All of the above

a) Both i and ii

b) Both i and iii

c) ii only

d) iv only

12. Identify the manipulators in C++:

a) endl

b) setw

c) Both a and b


13. a = (b = 5); The C++ statement is an example of

a) Compound assignment

b) Embedded assignment

c) Chained assignment

d) Multiple assignment

14. Water-fall model is associated with

a) Control structures

b) Type conversions

c) Manipulators


15. Selection structure is also known by

a) branching

b) straight line

c) iteration


16. Consider the following code:

cout<< “Welcome”;

This is an example of

a) C++ statement

b) Return type

c) Function

d) Both a and c

Chapter IV: Functions in C++

1. Which of the following is true about a function call in a C++ program?

a) A function must be called atleast once

b) A function cannot be called from other functions

c) A function may be called whenever it is necessary

d) Both a and c

2. Function prototyping defines

a) The return type of the function

b) The identifier of the function

c) The number and type of arguments

d) All of the above

3. Find if the following function prototype contains any error:

double area(int )

a) No error

b) Variable name is not included in the argument list

c) Semicolon is not found


4. Identify which function prototype exhibits the following: Name of the function is

sample_calc, which receives two values of type double and returns no value;

a) sample_calc(double, double);

b) void sample_calc(double, double);

c) double sample_calc(void);

d) void sample_calc(double, double)

5. When you call a function by passing the address of a data variable, it is called ________.

a) Call by reference

b) Call by value

c) Call by two directions

d) Both b and c

6. Which of the following function calls is correct while providing default arguments:

I. double calc(int a, float b=12.0);

II. double calc(int a=3, float b=12.0, int c);

III. double calc(int a=3, float b, int c=8);

IV. double calc(int a, float b=12.0, int c=8);

a) I only

b) II only

c) Both I and IV

d) Both II, and III

7. Which function call does invoke the following function prototype?

float sub1(int a, float b);

a) X=sub1(5.0,6.5);

b) X=sub1(5,6.5);

c) X=sub1(5,6);

d) Both b and c

8. Identify the variables, which are local to the following function:

int calc(int p, int n)

{

int q;

q=pow(p,n);

return(q);

}

a) p and n

b) p,n, and q

c) q

d) Cannot be determined without the main() function

9. Which of the following statements is true about the function that contains the const

argument?

a) The function should not modify the const argument

b) Const declaration is necessary only when the arguments are passed by

reference

c) Both b and c


10. Which of the following functions in C++ replace the usage of macros in C?

a) friend function

b) virtual function

c) inline function

d) All of the above

Chapter V: Classes and Objects

1. The declaration of a class includes

a) Declaration of data members

b) Declaration of function prototype

c) Return statements of functions

d) Both a and b

2. By default, the members of a class are

a) private

b) public

c) protected

d) static

3. Which OOP feature can be enabled by using private declaration for the class members?

a) Data abstraction

b) Polymorphism

c) Encapsulation

d) Modularity

4. Which of the following will assign the value to the class member variable num?

void getnum(int a)

a) {num=a};

b) {num=a;}

c) {a=num};

d) {a=num;}

5. Which of the following is not true about member functions?

a) Can access private data variables

b) Can call another function directly without using dot operator

c) Both a and b


6. Identify all the members of the following class xyz:

class xyz

{

int x,y;

public:

xyz();

void calc(int a, int b);

void output_calc(void);

};

a) Data members x and y

b) Data members x and y, Constructor, and member functions calc() and

output_calc()

c) Data members x and y, and member functions calc() and output_calc()

d) Constructor and member functions calc() and output_calc()

7. Which of the following is not true about static member variable?

a) Only one instance of static member can be created

b) Visible only within the class

c) It can be initialized whenever necessary

d) Both a and b

8. What is the general format of calling a static member function using a class name?

a) class-name :: function-name

b) function-name :: class-name

c) class-name :: function-name;

d) function-name :: class-name;

9. Which of the following is true while passing objects as function arguments? It is possible

a) to pass copy of the entire object to the function

b) to pass only the address of the object to the function

c) to pass the objects to a non-member function

d) All of the above

10. A friend function

I. Can be invoked similar to other functions without using objects

II. Cannot access to other member functions directly

III. Cannot be called using the object of the class to which it has been

declared as friend

IV. Can be declared only in the public part of a class

a) I, II and III

b) I, II and IV

c) I, II, III and IV

d) IV only

Chapter VI: Constructors and Destructors

1. Which of the following is not true about constructors and destructors?

a) They must have the same name as class

b) They cannot return values

c) They cannot be called more than once in a program

d) They are called automatically

2. The default constructor for class A is

a) A :: A()

b) A :: A(int)

c) A :: A(int);

d) A :: A();

3. Which of the following statements do correctly describe the characteristics of

constructors?

I. They cannot be inherited

II. They cannot be virtual

III. They need not be declared in the public section

IV. We cannot refer to their addresses

a) Both I and II

b) I, II, and IV

c) Both II and III

d) I, III and IV

4. Which of the following is called an implicit constructor for the class xyz?

a) xyz(){ }

b) xyz(int){}

c) xyz(){ };


5. Consider the following code segment:

class simple

{

int a,b;

public:

simple();

simple(char[]);

};

Which of the following would assigns the string “welcome” to the second constructor?

a) simple s(“welcome”);

b) simple s(welcome);

c) simple s=”welcome”;


6. Identify if any error in the following code segment

1. class example

2. {

3. float x;

4. public:

5. void example();

6. example(int, float);

7. };

a) Line 7 should not include the semicolon

b) Line 6 is an incorrect statement

c) Line 5 cannot include void

d) No error

7. Which of the following statements are true about copy constructors?

I. It declares and initializes an object from another object

II. It will not be useful when arguments are passed by value

III. It can be used to pass arguments by reference

IV. The compiler provides its own copy constructor, if it is not defined.

a) I, II, IV

b) All are correct

c) Both II and III

d) III only

8. The following statement creates a constant object of a class simple:

const simple m(a,b);

Which the following is true regarding the above statement?

a) The compiler generates compile-time error if you try to change the values of ‘a’

and ‘b’

b) Const member is a function prototype

c) The compiler generates an error if m tries to invoke non-const member functions

d) All of the above

9. Which of the following statements do incorrectly describe the characteristics of

destructors?

I. A destructor is a member function, which has the same name as class

name

II. A destructor receives only one argument

III. A destructor does not return any value

IV. Usage of destructors in a program clean up memory space that is not

used

a) Both I and II

b) All are incorrect

c) Both II and III

d) I, II and IV

10. Which of the following is a correct description of the destructor ‘sample’ and includes

output statements (if possible)?

a) sample :: ~sample() {cout << “Welcome”; }

b) sample :: ~sample() { };

c) void ~sample() { }

d) ~sample() { };

Chapter VII: Operator Overloading and Type Conversions

1. Which of the following operators cannot be overloaded?

a) ?:

b) ::

c) .*

d) All of the above

2. Operator Overloading is also known by the term

a) runtime polymorphism

b) compile-time polymorphism

c) Both a and b


3. Operator overloading is necessary because

a) C++ attempts to make the user-defined classes act like built-in types

b) To provide new definitions for most of the C++ operators

c) To add user-defined data type like basic data types

d) All of the above

4. Which of the following is required to overload an operator in C++?

a) operator function

b) built-in function

c) Both a and b


5. Identify the correct definition of an operator function for the class sample, which

overloads a unary minus operator and returns no values.

a) sample :: oper-() { };

b) void sample :: operator-() { }

c) void sample :: operator-() { };

d) sample :: operator-() { }

6. Which of the following is not true about the code segment given below?

float sample :: operator +(float x) {// code }

a) It receives only one float type argument explicitly

b) It returns a float type value

c) It is a member function of sample


7. Which of the following operators cannot use friend functions for overloading?

I. ==

II. ( )

III. [ ]

IV. ->

a) I only

b) II only

c) II, III and IV

d) I, II and III

8. Which of the following is not true about operator overloading?

a) Only existing operators can be overloaded

b) Binary arithmetic operators (+,-,*,/) need not return a value

c) It is impossible to redefine an operator

d) All of the above

9. Which of the following code segments will convert a class object namely sample to type

double?

a) sample :: operator double() { }

b) operator double() { }

c) sample :: operator double();

d) operator double();

10. Which of the following statements does correctly describe the casting operator function?

a) It must not specify return type

b) It must be a class member

c) It must not have any arguments

d) All of the above

Chapter VIII: Inheritance: Extending Classes

1. Which of the following OOP concepts is supported by Inheritance?

a) Abstraction

b) Encapsulation

c) Reusability


2. Which of the following does a derived class inherit from a base class?

a) public and protected class members

b) public and private class members

c) only public data

d) Everything

3. Which of the following statement(s) is true, if a derived class is publicly inherited from a

base class?

I. The public members of the base class become public members of the

derived class

II. The public members of the base class become private members of the

derived class

III. The public members of the base class are inaccessible to the objects of

the derived class

IV. All of the above

a) I only

b) Both I and II

c) Both I and III

d) IV only


class A

{

int a;

public:

int b;

void inp();

}

class B : A

{

// members of B

}

Which of the following statement(s) is NOT true regarding the above code?

a) The public members, namely ‘b’ and inp() of class A become private members of

class B

b) The public members, namely ‘b’ and inp() of class A can be accessed by the

member functions of class B

c) The public members, namely ‘b’ and inp() of class A are inaccessible to the

objects of class B


5. According to the following code, which of the following class members does the derived

class inherit from the base class?

class base

{

float x;

int y;

public:

int a;

void get_a();

void put_a();

}

class derived : public base

{

// members of B

}

a) float x

b) int y

c) get_a(), void put_a()

d) All of the above

6. Which of the following statement(s) is true about the visibility of inherited members?

a) When a class is inherited in protected mode, the private members of the base

class become protected members of the derived class

b) When a class is inherited in private mode, only the public members of the base

class can be inherited to the derived class

c) When a class is inherited in public mode, the private members of the base class

cannot be inherited


7. What are the visibility modifiers available in C++?

a) public

b) private

c) protected

d) All of the above

8. Which of the following functions can have access to the private and protected members

of a class?

a) A member function of a class that is a friend of the class

b) A member function of a derived class

c) A function that is a friend of the class

d) All of the above


class B : public A

{

int a;

public:

int b;

void a_inp();

void a_out();

}

class C : public A

{

private:

float x;

public:

double get_calc();

double put_calc();

}

Which of the following statement(s) is true regarding the above code?

a) Class A is the parent class of both the classes B and C; and class B inherits

get_calc() from class C

b) Class A is the parent class of both the classes B and C, which do not have any

relationship between them

c) Two classes cannot be the child classes of the same base class

d) Class A is the parent class of both the classes B and C; and class C inherits

a_out() from class B


class Book {……..};

class Prose : public Book {……….};

class Poetry : public Prose {……….};

The above code is an example of

a) Multiple Inheritance

b) Multilevel Inheritance

c) Hierarchical Inheritance

d) Hybrid Inheritance

11. Consider a class D, which is inherited from two classes B and C. The classes B and C

inherited the members from class A. Which feature of C++ does allow you to handle such

kind of mulitpath inheritance?

a) Abstract class

b) Virtual base class

c) Duplicate class


12. If a class contains the objects of another class as its members, then it is known as

a) Containership

b) Private inheritance

c) Dynamic notation


Chapter IX: Pointers, Virtual Functions and Polymorphism

1. Which of the following is true about pointers?

a) A pointer is a data type

b) A pointer is a keyword

c) A special type of integer variable


2. Which of the following statement(s) is true according to the following statement?

p=*ptr;

a) p must be a pointer variable

b) The value of ptr is assigned to the variable p

c) The address of the pointer ptr is assigned to the variable p

d) The value of the variable that the pointer ptr is pointing to is assigned to the

variable p

3. Compile time polymorphism is also known as

a) early binding

b) static binding

c) static linking

d) All of the above

4. C++ supports a mechanism virtual function to achieve

a) compile time polymorphism

b) function overloading

c) run time polymorphism

d) operator overloading

5. Which of the following is NOT true about virtual functions?

I. They cannot be static members

II. A virtual function can be a friend of another class

III. We can have virtual constructors, but we cannot have virtual destructors

IV. They are accessed by using object pointers

a) II only

b) III only

c) Both II and III

d) I, II and IV


int main()

{

int x, *x_ptr=&x;

x=5;

x_ptr=NULL;

cout<< x << “ “ << *x_ptr;

return 0;

}

What is the output of the above code?

a) <hexadecimal address> 0

b) <hexadecimal address> <hexadecimal address> but addresses are same

c) <hexadecimal address> <hexadecimal address> but having different addresses

d) <hexadecimal address> 5


int main()

{

double f, *f_ptr=&f;

f=5.25;

f_ptr=4.5;

cout<< “Value of f is:” << “ “ << f;

return 0;

}


a) Value of f is: 5.25

b) Value of f is: <hexadecimal address>

c) Value of f is: 4.5

d) Compiler error

8. How will you assign value ‘5’ to the variable ‘x’ inside a member function using this

pointer?

a) this->x=5;

b) this.x=5;

c) x=5;


9. Consider a class X, which includes a virtual function called X_output. The virtual function

receives a float value and returns nothing. Find out the function prototype for the same.

a) virtual void X_output(float );

b) X:: virtual void X_output(float );

c) virtual X:: void X_output(float );

d) virtual :: void X_output(float );

10. What would be the output of the following code?

#include<iostream.h>

#include<conio.h>

class A

{

public:

virtual void disp()

{

cout<<"This is from class A";

}

};

class B : public A

{

public:

void disp()

{

cout<<"This is from class B";

}

};

void main()

{

clrscr();

A *s;

s = new B();

s->disp();

}

a) This is from class A

b) This is from class B

c) This is from class A This is from class B


11. Which of the following is NOT true about pure virtual function?

a) It is also called do-nothing function

b) It cannot declare its own objects

c) A virtual function, which is not equated to zero is called a pure virtual function


Chapter X: Managing Console I/O Operations

1. Which of the following is not an input/output stream class?

a) ios

b) istream

c) ostream


2. Which class does define the member function put()?

a) istream

b) ostream

c) streambuf


3. Which of the following code would read a line of text from char type variable, book[20]?

a) cin.getline(book,20);

b) cin.getline(book[20]);

c) cin.getln(book,20);



char *str= “Managing Console I/O Operations”;

cout.write(str,15);

a) Managing Console I/O Operations

b) Managing C

c) Managing Consol


5. Which of the following feature does allow you to format the output in C++?

a) Manipulators

b) ios class functions and flags

c) User-defined output functions

d) All of the above

6. Which of the following functions allow you clear the specified flags?

a) fill()

b) unsetf()

c) cflag()



cout.width(5);

cout.precision(2);

cout<< 846.209;

a) 846.20

b) 846.21

c) 846.209

d) 846.2

8. Identify the equivalent ios function for the manipulator ‘setw’.

a) width()

b) setwidth()

c) swidth()



cout.fill(‘$’);

cout.setf(ios::left, ios:: adjustfield);

cout.width(20);

cout<< “I/O Operations”;

a) Operations$$$

b) I/O Operations

c) I/O Operations$$$$$$

d) I/O Operations$$$$$$$

10. Which of the following flags do not have any bit fields?

a) showpoint

b) showpos

c) showbase

d) Both a and b

Chapter XI: Working with Files

1. All file stream classes are derived from

a) ifstream

b) fstreambase

c) ifstreambase

d) ofstreambase

2. Which of the following stream classes provide support for simultaneous input and output

operations?

a) ifstream

b) ofstream

c) fstream


3. Which of the following statement(s) creates an output stream object called out_strobj and

opens a file named “sample”?

a) ofstream out_strobj(“sample”);

b) ofstream out_strobj(sample);

c) ostream out_strobj(sample);

d) ostream out_strobj(“sample”);

4. Which of the following function(s) opens a file named “sample” for writing only?

a) ofstream_object.open(“sample”, ios::app);

b) ifstream_object.open(sample, ios::out);

c) ofstream_object.open(“sample”, ios::out);

d) ifstream_object.open(sample, ios::app);


1: void main()

2: {

3: char line[80],str[80];

4: str = "Working with C++ files";

5: ofstream fout;

6: fout.open("sample.txt",ios::out);

7: fout <<str ;

8: fout.close();

9: }

The above code will not compile. Assume that all the header files are included in the

program. Identify which line should be changed to fix the error?

a) Line 6 & Line 7

b) Line 4

c) Line 3

d) Line 8

6. Consider a file named ‘sample.txt’ contains the string “Working with C++ files”. Now the

following code attempts to read the file.

void main()

{

char line[80];

ifstream fin;

fin.open(“sample.txt”,ios::in);

fin>>line;

cout<<line;

fin.close();

}

What would be the output of the following code?

a) Working with C++ files

b) Working

c) Working w



void main()

{

char c,line[50];

clrscr();

fstream fout;

fout.open("sample.txt",ios::out|ios::in);

fout <<"Working with C++ Files";

fout.seekg(0,ios::beg);

fout.seekg(5,ios::cur);

fout.get(c);

cout<<c;

fout.close();

}

What would be the output of the above code?

a) g

b) i

c) n

d) Working

8. Assume that the file pointer points to the byte number 22. Now consider the following

code segment:

fout.seekg(2,ios::beg);

fout.seekg(-4,ios::beg);

int k=fout.tellg();

cout<<k;

What would be the value of k?

a) 24

b) 20

c) 22


9. Which of the following function(s) does allow you to read data in binary form?

a) write()

b) read()

c) get()

d) Both a and b

10. Which of the following input function reads the variable ‘aval’ of type float with input file

stream object ‘file_obj’?

a) file_obj.read((float *) & aval, sizeof (aval));

b) file_obj.read((char *) & aval, sizeof (aval));

c) file_obj.read(& aval, sizeof (aval));

d) file_obj.read(float aval, &aval);

Chapter XII: Templates

1. C++ Templates support the concept of

I. modular programming

II. generic programming

III. structural programming

IV. None of the above

2. Which of the following is NOT true about Templates?

I. They allow you to define generic classes

II. Template type can be substituted by any data-type

III. They eliminate code duplication for different data types



template <class temp>

class sample

{

……..//code

};

Identify the correct syntax for declaring a dynamic array of characters using the above

template.

I. sample <char> characterArray;

II. sample <datatype> characterArray;

III. temp <char> characterArray;

IV. temp <datatype> characterArray;

4. Which of the following statement(s) defines more than one generic data type in a class

template?

I. template <class temp1, class temp2…>

II. template <class temp1; class temp2…>

III. template <class temp1, temp2…>

IV. template <class temp1; temp2…>


template <class temp>

void sample(temp &x)

{

…….//code

};

Which of the following is true about the above code?

I. Declares a sample() class template that receives the given data type for a single

value and returns no value

II. Declares a temp function template that receives the given data type for a single

value

III. Declares a sample() function template that receives a value of given data type and

returns no value


6. Which of the following are not the advantages of class templates in C++?

I. One C++ class template can handle different types of parameters

II. Testing and debugging efforts are reduced

III. It allows the process of instantiation



1: template <class temp1, temp2>

2: void show(temp1 a, temp2 b)

3: {

4: cout<<”a”;

5: }

Assume that there is no logic error. Identify if there is any declaration error:

a) Line1

b) Line 4

c) Both a and b

d) No error


#include<iostream>

template<class temp>

int powerofTwo(temp &x)

{

return(!(x-1)&x);

}

void main()

{

int b=powerofTwo(100);

cout<<b;

}


a) 0

b) 1

c) 100


9. Which of the following statement(s) is similar to the declaration of non-type template

parameters?

a) Pointer to member

b) Pointer to object or pointer to function

c) Reference to object or reference to function

d) All of the above

10. Consider the declaration of a template non-type argument in the following code snippet:

template <class temp, int max> class sample

{

temp a[max];

static int b=50;

// ………

}

Which of the following statement(s) does not invoke the above template correctly?

I. sample<float, 10*10> x;

II. sample<float, 30>20> x;

III. sample<float, (30>20)> x;

IV. sample<float, 10.0> x;

a) I only

b) III only

c) Both II and IV

d) Both I and III

Chapter XIII: Exception Handling

1. Which of the following error occur due to poor understanding of the language?

a) Logical error

b) Run-Time error

c) Syntax error

d) Program error

2. Which block handles the exception?

a) Finally block

b) Catch block

c) Try block


3. Which of the following statement(s) is true about try block?

I. The try block is immediately followed by the catch block.

II. Try statement can have only one catch statement.

III. A program segment can have more than one catch statement with a try

statement.

IV. All of the above

a) I only

b) Both I and II

c) Both I and III

d) IV only

4. What happens when the try block does not throw any exception?

a) The program is aborted

b) Normal execution is completed

c) Cannot be predicted


5. What will be the output of the following code segment?

void function();

int main()

{

try

{

function();

}

catch (char)

{

cout<<"Caught a Char<<endl";

}

return 0;

}

void function()

{

throw 2;

}

}

a) Error in execution

b) Caught a Char

c) Abort() function is invoked


6. Which of the following statement(s) is NOT true about catch (…) statement?

I. All the throws are not caught by catch (…) statement

II. Catch (…) statement should always be placed last in the list of handlers.

Placing it before other catch blocks would prevent those blocks from

catching exceptions

III. All the throws are caught by catch (…) statement

IV. Catch (…) statement should always be placed first in the list of handlers.

Placing it before other catch blocks would prevent those blocks from

catching exceptions

a) I only

b) Both II and III

b) Both III and IV

c) Both I and IV

7. Which of the following statement(s) is used to rethrow an exception?

a) throw(exception);

b) throw exception;

c) throw;



void divide(int x, int y)

{

try

{

if(y==0)

throw y;

else

cout<<endl<<"Division result is: " <<x/y<<endl;

}

catch(int)

{

throw;

cout<<endl<<"Caught Divide by zero error inside function";

}

}

int main()

{

try

{

divide(20,0);

}

catch(int)

{

cout<<endl<<"Caught Divide by zero error inside main";

}

return 0;

}

What will be the output of the above code?

a) Caught Divide by zero error inside main

b) Caught Divide by zero error inside main

Caught Divide by zero error inside function

c) Caught Divide by zero error inside function


9. Which of the following is the general form of using an exception specification?

a) type function(arg-list) throw(type-list)

{

........

........ Function body

........

}

b) type function(arg-list) throw(arg-list)

{

........


........

}

c) type function(type-list) throw(type-list)

{

........


........

}


10. What will happen if an error is not handled?

a) Error in compilation

b) Abrupt program termination

c) Error in execution


Chapter XIV: Introduction to the Standard Template Library

1. Which of the following is not a sequence container available in STL?

a) vector

b) deque

c) array

d) list

2. Consider the following code snippet:

int main()

{

vector <int> v1(10);

vector <int> v2(10);

v1.at(0)=24;

v1.at(1)=20;

v1.at(2)=38;

for(int i=0;i <3; i++)

{

cout<<v1[i]<<" ";

}

v2=v1;

cout<<v2[0];

return 0;

}

What is the output of the above program?

a) Error as vectors cannot be copied

b) 24 20 38 24

c) 24 20 38

d) No output

3. Identify the correct combination for the following data:

I. Associative container : A. Random

II. Derived container : B. multiset

III. Sequence container : C. priority_queue

IV. STL iterator : D. deque

a) I-D, II-A, III-C, IV-B

b) I-D, II-C, III-A, IV-B

c) I-B, II-D, III-C, IV-A

d) I-B, II-C, III-D, IV-A


void main()

{

list <int> l1;

list <int> l2;

l1.push_front(6);

l1.push_back(8);

l1.push_front(4);

l1.push_back(5);

l1.push_front(3);

l1.reverse();

l1.front()=l1.front()*5;

l2=l1;

cout<<l1.front()<<" ";

cout<<l2.back();

}

What will be the output of the above code if there is no compile error?

a) 25 3

b) 16 4

c) 9 8

d) 36 5

5. Which of the following is true about Iterators in C++?

a) The functioning of Iterators is similar to pointers

b) Only the derived containers are traversable with iterators

c) The input and output iterators support the most functions of iterators



1. void main()

2. {

3. list <char> l;

4. list <char>:: iterator i;

5. l.push_back('k');

6. l.push_back('i');

7. l.push_back('n');

8. i=l.end();

9. cout<<i;

10.}

The above code will not compile. Identify which line should be changed to fix the error.

a) Line 4

b) Line 3 & Line 4

c) Line 8

d) Line 9

7. Pick out the correct usage of the list function called, splice().

a) Deletes a list from the invoking list

b) Arranges the list elements as specified

c) Inserts a list into the invoking list

d) Gives the size of the list

8. If map_test is a map,

map<x,y> k = map_test;

Which of the following statement(s) does illustrate the above code correctly?

I. It will create a new map k whose elements are logical copies of the

elements of map_test.

II. It is equivalent to: map<x,y>map_test(k);

III. It will create a new map map_test whose elements are logical copies of

the elements of k.

IV. It is equivalent to: map<x,y>k(map_test);

a) I only

b) IV only

c) Both II and III

d) Both I and IV

9. Consider ‘i’ is an iterator that accesses the elements of a map. Which of the following will

be used to access the two entries, namely key and value of the map?

a) i.first, i.second

b) (*i).first, (*i).second

c) *i.first, *i.second

d) *i.first, (*i).second

10. Which of the following is NOT true about function objects?

a) The class, which creates a function object, contains only one overloaded

operator() function.

b) Function objects can be used to perform arithmetic and logical operations.

c) For using function objects, <functional> header file is needed.


Chapter XV: Manipulating Strings

1. string is a

a) data-type

b) class

c) namespace

d) function

2. Which of the following function is used to read a line of text with blanks?

a) inputline( )

b) getline( )

c) putline( )

d) None the above

3. Which of the following function is not supported by the string class?

a) count( )

b) Assign( )

c) resize( )

d) empty( )


void main()

{

string s1("example");

string s2("2468");

s1.insert(2,s2);

s1.erase(3,5);

s1.replace(2,3,s2);

cout<<s1;

cout<<endl;

}


a) ex2468ample

b) ex2ple

c) ex2468e



void main()

{

int a,b;

string s1("aabbcc");

string s2("bbccaa");

a = s1.compare(4,2,s2,2,2);

b = s1.compare(0,2,s2,0,2);

if(a == 0)

cout<<"Equal , ";

else

cout<< "Not equal ,";

if(b ==0)

cout<<"Equal";

else

cout<<"Not Equal";

}


a) Not Equal , Equal

b) Not Equal , Not Equal

c) Equal , Equal

d) Equal , Not Equal

6. Which of the following function does exchange the contents of two strings?

a) exchange( )

b) change( )

c) swap( )


7. Which of the following function can retrieve the character stored at a specified location?

a) at( )

b) find_first_of( )

c) find( )

d) find_last_of( )


void main()

{

string s1("Time and tide wait for none");

int f;

f=s1.find("t");

cout<<endl<<f;

f=s1.find_first_of("t");

cout<<"\t"<<f;

f=s1.find_last_of("t");

cout<<"\t"<<f;

f=s1.find_first_not_of("t");

cout<<"\t"<<f;

f=s1.find_last_not_of("t");

cout<<"\t"<<f;

}


a) 0 0 17 1 26

b) 0 9 17 0 26

c) 9 0 17 0 26

d) 9 9 17 0 26

9. Consider the following statement:

s1.compare (s2);

Which of the following statement is true about compare( ) function?

I. Returns 0 if s1 and s2 are equal

II. Returns -1 if s1 is greater

III. Returns -1 if s2 is greater

IV. Returns 1 if s1 and s2 are equal

a) Both I and III

b) Both III and IV

c) Both I and II

d) I only

10. Which of the following operator does represent concatenation assignment?

a) &=

b) +

c) +=

d) =

Chapter XVI: New Features of ANSI C++ Standard

1. Which of the following data type(s) is introduced by ANSI C++?

a) bool

b) wchar_t

c) char_t

d) Both a and b


……………………………..

int p;

string s("Pass");

bool k;

if(s=="pass")

{

k=true;

}

p=true+50+false;

cout<<p;

……………………………..

What will be the output on executing the above code?

a) Error as the Boolean values cannot be added

b) 51

c) 52

d) No output

3. Which of the following character literal(s) does use two bytes of memory?

a) wide_character literal

b) byte_character literal

c) new_character literal


4. Which of the following casting operator can cast a pointer to any other type of pointer in

ANSI C++?

a) const_cast

b) dynamic_cast

c) reinterpret_cast

d) static_cast


……………….

char *a,b;

if(typeid(a)==typeid(b))

cout<<"a";

else

cout<<"b";

………………….


a) b

b) a

c) Compilation error

d) No output


1. class sample

2. {

3. public:

4. explicit sample(float);

5. int a;………………

5. }

6. sample x=10.5;

………..

The code will not compile. Which of the following option will solve the problem?

a) Line 6 should be changed to sample x(10.5);

b) In line 4, explicit keyword should be removed

c) Both a and b

d) Either a or b

7. Which of the following keyword is used to modify a const object?

a) explicit

b) typeid

c) mutable

d) typename

8. Which of the following option will create a user-defined namespace in ANSI C++?

a) namespace namespace_name{….};

b) namespace(){namespace_name}

c) namespace namespace_name{….}

d) namespace(){namespace_name}

9. Let us define a namespace called ‘samplespace’, which includes a member variable,

namely ‘p’. How will you access this member variable from outside the namespace?

I. using namespace samplespace;

II. using samplespace :: p;

III. samplespace.p;

IV. p :: samplespace();

a) I only

b) II only

c) Both III and IV

d) Both I and II

10. Write the equivalent expression using operator keywords for the following.

(a!=b) > (~(a & b)&=(a^b))

a) (a not_eq b) gt (not( a bitand b) and_eq (a xor b))

b) (a not_eq b) > (compl( a bitand b) and_eq (a xor b))

c) (a not_eq b) gt (not( a bitand b) not_eq (a exor b))

d) (a not_eq b) > (compl( a bitand b) not_eq (a exor b))

Chapter XVII: Object-Oriented Systems Development

1. Which model of object-oriented paradigm replaces the classic “water-fall” model of

procedure-oriented development?

a) Fountain model

b) Spiral model

c) Throwaway prototyping model


2. Functional decomposition technique can be used to implement _________.

a) Spiral model

b) Water-fall model

c) Reuse model

d) Fountain model

3. Which of the following is true about object-oriented analysis (OOA) approach?

a) Identifies the objects and their attributes

b) Identifies the services that each object is expected to provide

c) Establishes interconnections between the objects

d) All of the above

4. Data flow diagram is also known as________.

a) Bubble chart

b) Data flow graph

c) Both a and b


5. Which of the following can be used to identify the services provided and received by

objects?

a) Information Flow Diagram

b) Entity-Relationship Diagram

c) Either a or b

d) Neither a nor b

6. Which relationship defines ‘is_a’ relationship in object-oriented design?

a) Containment relationship

b) Inheritance relationship

c) Use relationship


7. Let us assume that there are two classes, namely M and N. Consider the following

statement:

M calls a member of N

Which object-oriented relationship can provide this information?

a) Use relationship

b) Containment relationship

c) Inheritance relationship


8. Which of the following is associated with the process of a class organization?

a) Single-tree model

b) Forest model

c) Both a and b


9. Which of the following is NOT true about prototyping process?

a) It is the process of building and testing a working model of the proposed system

b) It is the process of time consuming and expensive

c) Both a and b


10. Which of the following can be used to identify the objects in object-oriented design?

a) Textual analysis

b) Data flow diagram

c) Both a and b


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