question paper review(april 2011)

Question paper review:
hi I believe all of you wrote good for cpp exam. Here I analyze which appears to be confusion for you

1. What is the Principle of OOP?
 Ans:
It is nothing but Properties of OOP's. If u write at least 4 properties also you get full marks
2. Define Constructor. Write is syntax.
 Ans: 
3. Compare classes in C++ with structures in C.
 Ans: means difference between classes and structures
4. Define Pass by reference method
 Ans:here you have to write the definition of REFERENCE Variable
(actually there are two kinds of Function calls (1)Pass by Value (2) Pass by Reference. Do u remember I explained swap the values using pass by reference while explaining the Reference variable.)
5. List the uses of references.
Ans: /*see the notes for advantages of reference variable. This question is most frequently asked question in Interviews > 
1) Fast Execution 2) Saving Memory 3) We can avoid the pointers 4) dulication is avoided

5) No complexity

6. State the relationship between base class and derived class.
Ans: 
7. State any three Benefits of Inheritance.
 Ans: here you have to write the advantages of Inheritance
8. State the need for Virtual Functions in C++.
Ans:/* if you write the definition of virtual function it is enough    */ (i) main reason for having a virtual function is to implement a different functionality in the derived class. (ii) to add (means we can redefine in derived class) more facility to that function (iii)virtual functions are needed to develop late binding concepts.  9.     Define custom / user defined manipulators.
Ans: Actually this question is unexpected question.
         There are two kinds of manipulators 
         (1) standard I/O manipulators
         (2)User defined(custom) manipulators
         if you write the standard I/O manipulators also they may give you the marks
        An important feature of c++ streams is that they also work well with user-defined manipulators as they do with predefined(build-in) manipulators. Hence, the users can design their own(customized) manipulators to control the appearance of the output depending upon their taste and need. The syntax for crating a custom manipulators is shown as follows. In the syntax, manipulator is the name of the user defined manipulator. Output is the manipulator caller and stream cascading object and arguments if any is used for arguments for parameterized manipulator. Syntax: Ostream& manipulator(ostream &output, argements) {        -------       -------      -------    return statement; }
         /*to see the answer then go to 4th chapter C++ I/O 
10. What is Generic programming?
Ans: Generic Programming is nothing but Templates. I hope you wrote this question
PART- B                                    5*10=50
11. How will you overload Unary and binary operator using Friend functions?
Ans:  we know that there are two types of operator overloading:          (i) unary operator overloading          (ii)binary operator overloading
12. (a)Explain the structure of C++ program with an example program.   
Ans:
        (b) Explain the steps in developing a C++ program.
Ans:
13. Write a C++ program function overloading.
Ans:
14. Explain the creating and accessing of array of objects with an example program.
Ans:
15. Write a C++ program to illustrate multiple inheritance.
Ans:
16. Write a C+ program to illustrate virtual base class in multipath inheritance.
Ans:
17. Explain the various file stream classes needed for File Manipulators.
Ans:  (i) Ofstream: stream class to write on files  (ii)Ifstream: stream class to read from files  (iii)Fstream: stream class to both read and write from/to files. these  classes are derived directly or indirectly from the classes istream, and ostream. We have already used objects whose types were these classes: cin is an object of class istream and cout is an object of class ostream. Therefore, we have already been using classes that are related to out file streams. Ans in fact, we can use our file streams the same way we are already used to usecin and cout, with the only difference that we have to associate these streams with physical files: (i) ifstream: this is the class for input operation on files similarly to statndard input. It includes the methods(functions) open(), close(), read(), get() getline(), and the overloaded extraction operator. (ii) ofstream: this is the class for output operation of files. Similarly, to standard output methods included are open(), close(), put(), write() and the overloaded insertion oerator., (iii) fstream: this class derived from both ifstream and ofstream all the classes are declared in the fstream.h header file. The file also includes iostream.h files
18. Explain a class template for stack data structures.
Ans:

Concentrate the following chapters

1. First chapter which carries 42 marks so you must read this chapter

2. classes and Inheritances carries 29 marks

3. Templates carries 13 marks (function templates and class templates)

4. Arrays, Pointers, References carries 13 marks

5. c++ I/O Which carries 13 marks

All The Best

Today exams started, final year students wrote the exams, I heard that every day checking Squad comes, today also 4 members came to our college and checked, fortunately no body was caught by them,
so be careful..
You Have to concentrate first three chapters.
I Wish You All the Best, I hope you are preparing very well, .......:-)

CME IV TH SEM TIME TABLE

9.30 AM TO 12.30 PM.

Subcode	Date	subject
401	20.04.2011	English
402	23.04.2011	OS
403	26.04.2011	CH
404	28.04.2011	Cpp
405	03.05.2011	MP
406	05.05.2011	WB

Marks Weightage for Polytechnic Diploma

MARKS WEIGHTAGE

Subject                        : OOPS THROUGH C++

Subject Code  : CM-404

SNO	TOPICS	MARKS	SHORT	LONG
1.	OBJECT ORIENTED PROGRAMMING METHODOLOGY INTRODUCTION TO C++	42	4	3
2.	ARRAYS, POINTERS, REFERENCES	13	1	1
3	Classes and Inheritance	29	3	2
4.	C++ I/O	13	1	1
5.	Templates	13	1	1

Wish you Happy "Sri Rama " Navami

Wish you Happy "Sri Rama " Navami.

Mistakes you made in the Unit-II

• Most of the students made a mistake that is                                                                                                'virtual function' ,                                                                                                                                           pure virtual function,                                                                                                                                 and virtual Base class. Here these three are different concepts but most of the students wrote the definition of virtual base class for pure virtual function and virtual function.
• So read carefully about those concepts
• I have given in this blog for 'pure virtual function, and virtual functions with program (classes and Inheritance) so note down that programs
• Very a few students wrote correct definitions
• I will post Unit II marks very soon

What is Virtual Function?

Ans: When derived class overrides the base class function by redefining the same function, then if user wants to access redefined the function from derived class through a pointer from base class object, then you must define this function in base class as virtual function.

/* see in this blog for syntax, program */

What is pure virtual function?

Pure virtual function is virtual function with no body is known as Pure Virtual function.

/* see in this blog for syntax, program */

What is virtual Base class?

Ans: /* see the notes */

happy ugadi

happy ugadi

5. Templates

Templates are a feature of the C++ programming language that allow functions and classes to operate with generic types . This allows a function or class to work on many different data types without being rewritten for each one.
Templates are of great utility to programmers in C++, especially when combined with multiple inheritance and operator overloading.

Function templates

Function templates are special functions that can operate with generic types. This allows us to create a function template whose functionality can be adapted to more than one type or class without repeating the entire code for each type.

In C++ this can be achieved using template parameters. A template parameter is a special kind of parameter that can be used to pass a type as argument: just like regular function parameters can be used to pass values to a function, template parameters allow to pass also types to a function. These function templates can use these parameters as if they were any other regular type.

types of the templates:
1. function templates
2. generic classes or classes
3. explicit template specialization
2 Advantages and disadvantages

3 Generic programming features in other languages

The format for declaring function templates with type parameters is:

// function template
#include <iostream>

#include<conio.h>

template <class T>
T Max (T a, T b)

{
  T result;
  result = (a>b)? a : b;
  return (result);
}

void main ()

{
  int i=5, j=6, k;
  long l=10, m=5, n;
  k=Max<int>(i,j);
  n=Max<long>(l,m);
  cout << k << endl;
  cout << n << endl;
  

}

Class templates

We also have the possibility to write class templates, so that a class can have members that use template parameters as types. For example:

#include<iostream.h>
#include<conio.h>
template <class T>
class Demo
{
 T x,y,z;
 friend void display();
 public:
 //member function declarations
  temple();
void display();
}; //end of temple class
//defining member functions outside of its class
template <class T>
Demo::Demo()
  {
   x=2;
   y=3;
   z=4;
  }
template <class T>
 void Demo::display()
 {
  cout<<x<<endl<<y<<endl<<z<<endl;
 }

 void main()
 {
     Demo<int>obj;  //creating object, T is replaced with int
     clrscr();
      obj.display();
      getch();
}



Other Examples on Class Templates:
Single Linked List program

transpose of a maticx

/*transpose of a maticx*/
#include<iostream.h>
#include<conio.h>
void main()
{
 int m=3,n=3; //row size, colum size is 3 , m=n
 int a[][3]={1,2,3,4,5,6,7,8,9};//initializing the array
 clrscr();
cout<<"after transpose"<<endl;
 for(int i=0;i<=m-1;i++)  //this loop for rows
  for(int j=i+1;j<=n-1;j++) //this loop for columns
  {
   a[i][j]=a[i][j]+a[j][i]-(a[j][i]=a[i][j]); //swap the elements above diagnols with those below diagnols
  }
//displaying the transpose of 'a' matrix
  for(i=0;i<=m-1;i++)
  {
   cout<<"\n"; //for displaying row wise
   for(j=0;j<=n-1;j++)
   {
    cout<<a[i][j]<<"\t";
   }
  }
  getch();
 }

I WISH YOU ALL THE BEST FOR FOURTH SEMISTER STUDENTS

I WISH YOU ALL THE BEST , I HOPE YOU ARE PREPARING VERY WELL IN THE EXAM, PRACTICE ALL THE PROGRAMS ESPECIALLY RECORD PROGRAMS:


TIPS TO SECURE GOOD MARKS IN THE CPP EXAM

• Border lines , you know that, every exam you do
• Use pencil also to underline

• any question in section B you have to start with (i)defination (ii) syntax (iii) advantages (iv)disadvantages (v) rules (vi) example program. 

example: 

defination:Inline function: inline function is a function , at the time of function call what are the statements are in inline function that are substituted at the place of function call

syntax: 

inline returntype function()

{

  -----;

  -----;

}

advantages:

  (i) fast execution

  (ii)...//see the notes.

Disadvantages:

<<no need for this quesiton>>

rules:

example program:

...

• dont keep the papers blank.
• What is Hybrid Inheritance? Explain with a program?

Ans: definition:

        syntax: /*Multiple Inheritance or Multilevel Inheritance

       program: /*write multiple inheritance program

c05 OCT/NOV 2010 FIFTH SEMISTER RESULTS

STATE BOARD OF TECHNICAL EDUCATION AND TRAINING
ANDHRA PRADESH : HYDERABAD
C05 RESULTS OCT/NOV 2010.
Fifth Semister
sno	PIN	NAME	501	502	503	504	505	506	507	508
							cpp
1	08036-CM-058	veera hareesha	50	84	44	25	74	88	91	94
2	08090-CM-204	sree laxmi	16	57	32	27	49	90	90	91
3	08090-CM-245	NALLA JYOTHI	47	39	20	24	57	88	91	89
6	08121-CM-001	rajashekhar	77	80	57	69	71	100	100	100
8	08121-CM-3	vishnu murthy	74	68	64	80	77	97	97	100
9	4	MADHANMOHAN REDDY	76	69	46	35	26	88	90	92
10	5	SRIKANTH	73	73	50	49	56	97	99	100
11	6	RAMAVATH SAKRU	54	31	40	20	31	86	84	88
14	9	NAGESHWAR REDDY	82	71	61	75	84	100	99	98
16	11	PRANAY KUMAR	87	62	84	93	81	100	100	100
17	12	SURENDRA KUMAR	57	45	38	21	49	88	87	86
18	13	KANDHAGATLA ARUNA	73	62	67	61	96	98	98	99
19	14	SHAREEF MD	0	0	0	0	0	20	20	20
20	08124-CM-015	BOLLA JAHNAVI	82	46	78	74	92	100	99	100
21	16	GUGULOTH VINODH	94	93	98	89	93	100	100	100
22	17	SRUJAN KUMAR	38	43	31	40	31	93	92	94
23	18	RESHMA SULTANA	49	56	31	54	64	86	89	97
24	19	PAVAN KUMAR	51	63	31	57	50	93	89	93
25	20	RAVICHANDER A	38	51	9	43	38	78	81	88
26	21	LOHITHA	48	60	49	47	52	92	95	98
27	22	KOTHOJU SHRAVAN KUMAR	45	75	43	37	44	94	93	96
28	08124-CM-025	THOTA BHAVANI	65	84	59	76	91	100	100	100
31	26	VARAKALA MADHURI	18	41	20	13	43	34	36	37
32	08124-CM-027	GURVANI SRIVANI	84	62	62	52	83	99	97	100
35	30	AVULA SURESH REDDY	40	38	32	38	57	93	88	94
36	08124-CM-031	VADDE KIRAN	84	70	86	82	97	96	99	100
39	34	VARANASI ANIL KUMAR	31	8	20	8	13	91	85	82
40	08124-CM-035	G Y DEEPIKA	65	63	53	54	80	98	98	99
41	36	PILLI SAI PRAKASH	41	42	40	16	44	89	85	89
42	37	SYEDA SANA	58	24	28	24	50	86	87	87
45	40	B JHANSI RANI	44	40	39	61	48	83	88	90
46	08124-CM-041	CHOLLETI RAKESH KUMAR	59	64	72	60	73	98	96	95
47	42	DANDU RAM KUMAR	25	44	21	4	49	90	88	89
49	08124-CM-044	N RADHIKA	76	64	64	80	62	92	97	98
50	45	AKASH CHANDRA CHATURVEDI	0	0	0	0	0	20	20	20
52	47	BANGARAM NIRMALA	87	68	56	85	62	99	100	100
56	08124-CM-051	MADHELAL R UDAY SAI RAJ	17	11	18	9	8	82	86	87
58	08124-CM-053	S SHIRISHA	53	63	46	60	49	95	94	94
61	08124-CM-056	MAMILLA SAI PADAM	66	71	65	66	81	97	99	99
62	08124-CM-057	G KARTHIK KUMAR REDDY	29	41	39	42	59	89	90	85
65	08124-CM-060	BHANDARI ROUNAK	49	11	25	35	21	87	88	87
66	08124-CM-061	MD ABUBAKAR	76	67	84	86	68	93	100	99
68	08124-CM-063	RAGIPANI RAKESH KUMAR	69	68	69	81	79	93	99	96
69	08124-CM-064	KODAVATH VINOD	58	80	53	42	63	96	93	93
70	08124-CM-065	PENMATSA MADHURI	80	83	78	78	91	100	100	100
71	08124-CM-066	RAJULA SANDEEP	72	90	86	75	72	94	96	97
72	08124-CM-067	SANGISETTY SHIVANATH	53	52	65	57	79	98	96	98
73	08124-CM-068	S SAI ANIRUDH	72	70	65	70	95	97	93	99
	08124-CM-069	ATAPAKALA DIVAKARA RAO	48	71	78	70	94	99	100	100
75	08124-CM-070	MEGAVATH RAJENDHER	19	67	56	44	70	94	94	97
76	08124-CM-071	TADIKONDA VENKATA GOPI KRISHNA	29	74	62	55	76	94	91	92
77	08124-CM-072	DAPKE VIVEK	56	47	53	68	82	96	96	98
78	08124-CM-073	MEDHARA CHANDRAVENI	66	70	72	90	77	99	100	100
79	08124-CM-074	NALLAPALLY STEPHEN ULLASINI	47	29	42	30	48	92	90	92
80	08124-CM-075	SHAIK SALAM	59	41	46	47	69	92	92	96
81	08124-CM-076	R VIVEKANAND	74	47	69	78	53	95	94	99
82	08124-CM-077	BUNSODE SHALINI	96	64	83	87	90	100	100	100
83	78
84	08124-CM-079	MD IMRAN UL HAQ	41	46	52	17	36	89	91	87
85	80
86	08124-CM-081	B SHYAM	82	73	67	77	62	96	99	100
87	82
88	83
89	08124-CM-084	CH ARJUN	52	66	48	45	49	94	93	93
90	08124-CM-085	THAKUR KISHORE SINGH	66	46	52	41	33	93	88	86
91	08124-CM-086	AASHISH KALE	74	75	58	64	44	94	99	95
92	08124-CM-087	MUDETHULA PRASHANTH	80	80	72	83	74	96	99	100
93	88
94	08124-CM-089	NUMBI BHANU PRAKASH	66	75	59	55	64	94	95	97
95	90
96	08124-CM-091	THADURU SHAMALA	85	90	81	73	74	100	100	100
97	08124-CM-092	SUNITHA BIRADAR	86	87	90	88	77	100	99	100
98	08124-CM-093	THUMUKUNTA MALLIKARJUN REDDY	69	77	48	58	31	93	93	92
99	94
100	08124-CM-095	B RENUKA	66	77	76	84	84	100	98	100
101	08124-CM-096	BILLA SRINIVAS	53	48	44	38	28	88	92	87
102	97
103	98
104	08124-CM-099	SYED OSMAN ALI	94	90	82	81	70	100	100	99
105	08124-CM-100	MOHD SALMAN KHAN	40	57	53	61	54	92	89	87
106	101
107	102
108	08124-CM-103	SAGGU DIVYA	73	62	47	82	88	97	94	98
109	08124-CM-105	PADASANABOINA MADHURI	45	64	56	62	72	92	90	95
110	105
111	08124-CM-106	G KIRAN KUMAR	48	58	45	45	43	88	91	85
112	107
113	108
114	109
115	08124-CM-110	MAYAKOTI MAHESH KUMAR	18	59	27	38	17	81	89	86
116	111
117	08124-CM-112	RAVIPATI TARUN KUMAR	54	51	45	48	66	96	88	94
118	113
119	08124-CM-114	AKULA RAJESH	71	70	68	75	62	98	99	97
120	08124-CM-115	INKULU RAHUL	55	61	60	64	62	89	93	97
121	08124-CM-116	KASTHURI KUMARI B	47	43	57	75	45	88	92	97
122	08124-CM-117	AIJAZ MOHIUDDIN	71	74	66	85	68	88	94	91
123	08124-CM-118	MADARI MRINALINI	46	40	60	65	57	84	92	93
124	08124-CM-119	K GNANESHWAR GOUD	48	37	19	22	44	78	86	83
125	08124-CM-120	LADDHA VAISHNAVI	78	54	59	76	85	99	100	100
126	08124-CM-201	CHEGURI RAKESH KUMAR	75	56	65	65	66	99	100	100
127	08124-CM-204	K MAHESH	43	27	38	54	34	86	88	98
128	08124-CM-205	PARSA PRASAD	73	72	82	68	81	93	94	100
129	08124-CM-206	MUNAVATH ANITHA	70	49	65	66	75	88	92	94
130	08124-CM-207	GANDHAM BRAHMAIAH	94	72	94	85	98	100	100	100
131	08124-CM-208	MOHAMMAD NAYEEM	54	36	38	24	61	84	89	89
132	08124-CM-209	THALLA RAMA RAO	68	52	53	31	71	91	90	93
133	08124-CM-210	SYED EHTESHAM ALI	58	38	43	37	64	90	92	92
134	08124-CM-211	VUPPULA AJITH KUMAR	70	57	76	50	69	97	99	100
135	08124-CM-213	MADDELA MADHUSUDHAN SAGAR	70	25	48	49	56	94	98	95
136	08124-CM-214	ANUGULA PAVAN KUMAR	98	86	81	60	84	97	99	99
137	08124-CM-215	G BALARAJU	57	46	54	41	74	93	93	92
138	08124-CM-217	SANIKE MANISH	96	83	90	88	92	99	100	100
139	08124-CM-218	FAHAD AHMED SALAM	60	39	23	12	46	87	91	90
140	08124-CM-219	KOTHAPALLY CHANDRASHEKAR	95	61	77	53	87	91	98	97
141	08124-CM-223	RAMJELLI MARIAMMA	88	84	60	52	85	96	96	98
142	08124-CM-225	DANTHOJU VENKATESH	97	91	84	88	98	99	100	100
143	08124-CM-225	DANTHOJU VENKATESH	97	91	84	88	98	99	100	100
144	08124-CM-025	THOTA BHAVANI	65	84	59	76	91	100	100	100
145	08124-CM-027	GURVANI SRIVANI	84	62	62	52	83	99	97	100