K.V. NO 1 ARMAPUR Computer Science- XII Summer Vacation Home Assignment

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1 K.V. NO 1 ARMAPUR Computer Science- XII Summer Vacation Home Assignment By- Computer Science Home Assignment Created By-S.K.Verma, PGT CS

HOME ASSIGNMENT FOR SUMMER VACATION 2016-17 FIRST WEEK C++ Revision Tour MLP (MINIMUM LEARNING PACKAGE) 1. What is the difference between Actual Parameter and Formal Parameter?

2 HOME ASSIGNMENT FOR SUMMER VACATION FIRST WEEK C++ Revision Tour MLP (MINIMUM LEARNING PACKAGE) 1. What is the difference between Actual Parameter and Formal Parameter? Also, give a suitable C++ code to illustrate both. 2. Write the name of the header files which is/are essentially required to run/execute the following C++ code: 1 void main( ) char ch, word[ ] = Magic Box ; For(int i= 0; word[i]! = \0 ; i++) If (word[i] == ) cout<<endl ; else ch = tolower(word[i]); cout<<ch; 3. Observe the following program very carefully and write the names of those header file(s), which are essentially needed to compile and execute the following program successfully : typedef char TEXT[80]; TEXT Str[] = Peace is supreme ; int Index=0; while (Str[Index]!= \0 ) if (isupper(str[index])) Str[Index++]= # ; else Str[Index++]= * ; puts(str); 4. Find the correct identifiers out of the following, which can be used for naming variable, constants or functions in a C++ program : While, for, Float, new, 2ndName, A%B, Amount2, _Counter 5. Find the output of the following program: #include <iostream.h> void modify(int arr[ ], int N) for (int I=1;I<N;I++) arr[ I-1]+=arr[ I ]; int P[]=1,2,3,4,Q[]=5,10,15,20,30; modify(p,4); modify(q,5); for (int L=0;L<4;L++) cout<<p[l]<< $ ; cout<<endl; for (L=0;L<5;L++) cout<<q[l] << $ ; cout<<endl; HOT(HIGH ORDER THINKING) 1. Rewrite the following program code after removing all syntax error (if any). Underline each correction: CLASS User long UserId; char Gender; public void Authorize( ) cin>>userid; cin>>gender; void Show( ) Cout<<UserId << : << Gender << endl; ; void main( ) User U ; Authorize. U( ); Show( ); 2- In the following program, find the correct possible output(s) from the options. Justify your answer. #include<stdlib.h> void main( ) randomize( ); int p=99,q=999; int x=random(3)+4; int y=random(2)+2; for(int i=0;i<x;i++) cout<< # ; cout<<p<< - ; for(i=0;i<y;i++) ; cout<<q<<endl; i. ##99-@999 ii. ##99-@@999 iii. ######99-@@999 iv. ####99-@@@ 3. What do you mean by Recursive Function? 1

3 6. How member functions and non-member functions differ? Write the output of the following C++ program code : Note: Assume all required header files are already being included in the program. class Calc char Grade; int Bonus; public: Calc() Grade= E ;Bonus=0; void Down(int G) Grade =G; Void Up(int G) Grade+=G; Bonus++; void Show() cout<<grade<< # <<Bonus<<end1; ; Calc c; C.Down(2); C.Show(); C.Up(7); C.Show(); C.Down(2); C.Show(); 3. Study the following program and select the possible output(s) from the options (i) to (iv) following it. Also, write the maximum and the minimum values that can be assigned to the variable NUM. 2 Note : Assume all required header files are already being included in the program. random(n) function generates an integer between 0 and n 1. randomize(); int NUM; NUM=random(3)+2; char TEXT[]= ABCDEFGHIJK ; for (int I=1;I<=NUM; I++) for(int J=NUM; J<=7;J++) cout<<text[j]; cout<<end1; (i) FGHI (ii) BCDEFGH (iii) EFGH (iv)cdefgh FGHI BCDEFGH EFGH CDEFGH FGHI EFGH FGHI EFGH 2

4 8. Write the header files to which the following functions belong: (i) getc ( ) (ii) isalnum ( ) (iii) scanf ( ) (iv) getxy ( ) 9. Name the header files that shall be required for successful compilation of the following C++ program : main( ) char str[20]; cout<<fabs( ); cout<< \n Enter a string : ; cin.getline(str,20); return 0; 10. Choose the correct alternative from the options (i)- (iv). Justify your answer. #include<stdlib.h> #define Getval (N) ((N%2 = =0)? N+1:N+2) void main( ) randomize( ); int num= random(3)+3; for( int I= num ; I<=num+2 ;I++) ; Options: a) 3@5@7@ b) 7@7@9@ c) 7@9@9@ d) 7@9@11@ 11. Write the related library function name based upon the given information in C++. (i) Get single character using keyboard. This function is available in stdio.h file. (ii) To check whether given character is alpha numeric character or not. This function is available in ctype.h file. 12. Define the term data hiding in the context of object oriented programming Give a suitable example using a C++ code to illustrate the same. While implementing encapsulation, abstraction is also implemented. Comment. 13. What will be the output of the following program: #include <iostream.h> void Secret(char Str[ ]) for (int L=0;Str[L]!='\0';L++); for (int C=0;C<L/2;C++) if (Str[C]=='A' Str[C]=='E') Str[C]=Str[L-C-1]; else char Temp=Str[C]; Str[C]=Str[L-C-1]; Str[L-C-1]=Temp; char Message[ ]="PreboardExam"; Secret(Message); cout<<message<<endl; 4. What is the difference between #define & const? Explain through example. 5. Differentiate between ordinary function and member functions in C++. Explain with an example. 6. Find the output of the following program: #include <iostream.h> void Secret(char Str[ ]) for (int L=0;Str[L]!='\0';L++); for (int C=0;C<L/2;C++) if (Str[C]=='A' Str[C]=='E') Str[C]='#'; else char Temp=Str[C]; Str[C]=Str[L-C-1]; Str[L-C-1]=Temp; char Message[ ]="ArabSagar"; Secret(Message); cout<<message<<endl; 7. Find the output of the following program: # include <iostream.h> # include <conio.h> # include <stdlib.h> void main () char serial[] = 'A', 'B', 'C', 'D'; int number[] = 2, 6, 7, 3; clrscr(); randomize(); cout << " The winner is : "; cout << serial [random(3)]; for (int i = 0; i < 4; i++) cout << number[sizeof(int) + random(2) - 1 ]; getch(); Outputs: (i) The winner is : A2776 (ii) The winner is : D6766 (iii) The winner is : B6767 (iv) The winner is : C3672 3

5 14. In the following program, if the value of Guess entered by the 65, what will be the expected output from the following optlons (iii) & (iv)? #includeciostream.h> #includecstdlib.h> void main 0 int Guess; sundomize 0; (cin>>guess; for (int i = 1; i<=4; l++) New = Guess + random (i); cout<<(char) New; ) (i) ABBC (ii) ACBA (iii) BCDA (iv) CABD 15. Find the output of the following program: #include <iostream.h> int a=5; void sample( int &x, int y, int *z) a+=x; y*=a; *z=a+y; cout<<a<< <<x<< << y<< <<*z<< \n ; clrscr(); int a =7,int b = 5 ; sample(::a, a, &b); cout<< ::a << << a << <<b << \n ; sample(::a, a, &b); cout<< ::a << << a << <<b << \n ; 8. Study the following program and select the possible output from it: #include<stdlib.h> const int BIG = 3 ; void main( ) randomize( ); int Digit ; Digit = 90 + random (BIG ); for (int K = DIGIT ; K >= 90 ; K ) cout<< K << $ ; (i) 93$93$92$91$90$ (ii) 91$90$ (iii) 90$91$92$ (iv) 90$92$ 9. What will be the output of the following program? #include <iostream.h> void RIDDLE(int *N,int c) for(int i=1;i<c;i++) *(N+i-1)=*(N+i)+1; int p[ ] = 6,9,8,q[ ]=4,3,1,r[]=50,80; RIDDLE(p,3); RIDDLE(q,3); RIDDLE(r,2); for(inti=0;i<3;i++) cout<<p[i]<< - ; cout<<endl; for(i=0;i<3;i++) cout<<q[i]<< % ; cout<<endl; for(i=0;i<2;i++) cout<<r[i]<< - ; cout<<endl; SECOND WEEK Object Oriented Programming MLP (MINIMUM LEARNING PACKAGE) HOT(HIGH ORDER THINKING) 1. What do you understand by Polymorphism? Give an example in C++ to show its implementation in C Encapsulation is one of the major properties of OOP. How is it implemented in C++? II. What is Inheritance? Give an example in C++ to show its implementation in C++. 1I. Reusability of classes is one of the major properties of OOP. How is it implemented in C++? 1II. What is procedural programming paradigm and what are its limitations? 1II. Write any two advantages and two disadvantages of Object Oriented Programming. 1V. What two features of an object are linked together by encapsulation? IV. In overloaded function how matching is done? V. Advantages and Disadvantages of Object oriented programming.. V. What is the information being hidden by information hiding? 4

6 THIRD WEEK Classes and Objects MLP (MINIMUM LEARNING PACKAGE) 1.Write the output of the following program: class Test int a, b; public: void set( int I, int j) a = I; b = j; void show() cout << a << << b << endl; ; Test t1, t2; T1.set(10,4); t2 = t1; t1.show() t2.show() 2. What do you mean by getters and setters functions? 3. What do you mean by nesting of member function? 4. What do you mean by Enclosing class? 4. Defne a class WEAR in C++ with following description : Private members : code string Type string Size integer material string Price real number A function calprice( ) that calculates and assign the value of price as follows : For the value of material as WOOLEN Type Price(Rs.) Coat 2400 Sweater 1600 For material other than WOOLEN the above mentioned price gets reduced by 30%. Public members : A constructor to get initial values for code, Type & material as EMPTY & size and price with 0. A function INWEAR ( ) to input the values for all the data members except price which will be initialized by function calprice( ). Function DISPWEAR ( ) that shows all the contents of data members. 5. Find the output of the following program: CBSE 2012 class METRO int Mno, TripNo, PassengerCount; public: METRO(int Tmno=1) Mno =Tmno; PassengerCount=0; HOT(HIGH ORDER THINKING) 1. A class called A is declared and all its data member and member functions are private. Is it possible to declare an object of type A and use it in any function? Justify your answer. 2. A class is defined without any data member. What is the size of the class? 3. How does the visibility mode control the access of members in the derived class? Explain with example. 4. Time is a class with the following data members and member functions-: Data members- Hours (int) Minutes (int) Seconds(int) Member functions- Constructor to initialize the data members. To find the difference two time. To display time. Complete the program with the declarations and definitions. Read a time in the main () and pass it to the function to find the difference. 5. Define a class Employee in C++ with the following specification: Private Members: ename an array of char of size[50] ( represent employee name) deptname an array of char of size[20] ( represent department name) salary integer ( represent total salary of an employee) bonus float CalBonus() This function calculate the total bonus given to an employee according to following conditions- Deptname Bonus Accounts 4 % of salary HR 5% of salary IT 2% of salary Sales 3% of salary Marketing 4% of salary Public Members: Constructor to initialise ename and deptname to NULL and salary and bonus to 0. A function read_info to allow user to enter values for ename, deptname,salary & Call function CalBonus() to calculate the bonus of an employee. A Function disp_info() to allow user to view the content of all the data members. 6. Define a class Taxpayer, whose class description is given below:- Private Members:- int pan - to store the personal account no. char name[20] - to store the name float taxableinc - to store the total annual taxable income. float tax - to store the tax that is calculated. 5

7 void Trip(int PC=20) TripNo++, PassengerCount+=PC; void StatusShow() cout<<mno<< : <<TripNo<< : <<PassengerCount<<endl; ; METRO M(5), T; M.Trip(); M.StatusShow(); T.StatusShow(); M.StatusShow(); computetax ( )- A function to compute tax from the following rule:- Total Annual Taxable Income Rate of Taxation Up to % Greater than 60000, less than = % Above , upto % Above % Public Members :- inputdata ( ) - A function to enter the data and call the compute tax( ) function. Display ( ) - To display the data. FORTH WEEK Constructors & Destructors MLP (MINIMUM LEARNING PACKAGE) 1. A common place to buy candy is from a machine. The machine sells candies, chips, gum, and cookies. You have been asked to write a program for this candy machine. The program should do the following: 1.Show the customer the different products sold by the candy machine. 2.Let the customer make the selection. 3.Show the customer the cost of the item selected. 4.Accept money from the customer. 5.Release the item. The machine has two main components: a built-in cash register and several dispensers to hold and release the products. 2. What is a copy constructor? Give a suitable example in C++ to illustrate with its definition within a class and a declaration of an object with the help of it. 3. What do you mean by Regular Constructor? 4. Define class dispensertype in C++ with the following descriptions : Private Members: numberofitems of type integer cost of type integer Public Members: A default constructor dispensertype () sets the cost and number of items in the dispenser to 50 and 50. A constructor dispensertype (int,int) sets the cost and number of items in the dispenser to the values specified by the user. A function getnoofitems() to return the value of numberofitems. A function getcost() to return the value of cost. A function makesale() to reduce the number of items by 1 4. Explain with suitable examples how to create the object by calling the constructor implicitly and explicitly. HOT(HIGH ORDER THINKING) 1. Define class cashregister in C++ with the following descriptions : Private Members: cashonhand of type integer Public Members: A default constructor cashregister() sets the cash in the register to 500. A constructor cashregister(int) sets the cash in the register to a specific amount. A function getcurrentbalance() which returns value of cashonhand A function acceptamount(int) to receive the amount deposited by the customer and update the amount in the register 3. Consider the definition of the following class: class Sample private: int x; double y; public : Sample(); //Constructor 1 Sample(int); //Constructor 2 Sample(int, int); //Constructor 3 Sample(int, double); //Constructor 4 ; i. Write the definition of the constructor 1 so that the private member variables are initialized to 0. ii. Write the definition of the constructor 2 so that the private member variable x is initialized according to the value of the parameter, and the private member variable y is initialized to 0. iii. Write the definition of the constructors 3 and 4 so that the private member variables are initialized according to the values of the parameters. 6

8 5. What do you mean by Shadowing / Overriding Base Class Functions in Derived Class? 2. Answer the questions (i) and (ii) after going through the following class: 2 class player int health; int age; public: player() health=6; age=18 //Constructor1 player(int s, int a) health =s; age = a ; //Constructor2 player( player &p) //Constructor3 ~player() cout<< Memory Deallocate ; //Destructor ; player p1(7,24); //Statement1 player p3 = p1; //Statement3 (i) When p3 object created specify which constructor invoked and why? (ii) Write complete definition for Constructor3? 4. Given the program Main() cout<< Happy Summer Vacations Modify it to produce the following output without changing main() in anyway. Starting. Happy Summer Vacations Reading,Writing and Enjoying. Best of Luck 4. Consider the following declaration : class welcome public: welcome (int x, char ch); // constructor with parameter welcome(); // constructor without parameter void compute(); private: int x; char ch; ; which of the following are valid statements welcome obj (33, a9 ); welcome obj1(50, 9 ); welcome obj3(); obj1= welcome (45, T ); obj3= welcome; 3. Define a class SalesCounter with folloeing specifications: Data members: Net_amt, Amount Real values ClothType - string( 30), Pay_mode string (30) Member functions O Constructor to initialize the Amount as 0, ClothType as Cotton, Pay_mode as Cash, Net_amt as 0 O Calc_net () to calculate discount and net_amt. The Company offers discount scheme on each purchase to the customer. The scheme is as follows Purchase above 5000 and avail discount of 10% Purchase above 7500 and avail discount of 15% Purchase above 5000 and avail discount of 5% Purchase above 7500 and avail discount of 10% Purchase above 5000 and avail discount of 15% Purchase above 7500 and avail discount of 25% Now if the customer is paying by Cash an additional 2% discount will be given to them. If by Cheque no discount will be given, if payment mode is credit card 2.5% tax has to be paid by the customer on the total purchase. Purchase () The Salesman will enter the detail of the purchasing made by the customer and will also enter the payment mode(cash/cheque/credit CARD ), and will invoke the Calc_net() to calculate the net amount Show() The function will generate the bill to the customer along with the purchase details and the amount to be paid 7

9 FIFTH WEEK Database Concepts, SQL Concepts and Communication & Open Source Concepts And prepare short notes on the following Points. DATABASE AND SQL NETWORKING CONCEPTS What is DBMS? What is Network? What is relational database model? Need for Networking? Relation Netwok Goals Tuples Application of Networks SQL Evolution of Networking DDL (ARPANET,INTERNET,Inters DML pace) Elementary Terminology of network Relational Algebra Switching Techniques Selection (Message,Packet,Circuit) Projection Transmission Media, Guided and Unguided Media, About Cables Union Data Communication Cartesian Product Terminologies Types of Networks (LAN,MAN,WAN,PAN) Domain Network Topologies Degree Networking Devices Cardinality Communication Protocols Keys Wireless/Mobile Computing Candidate Key: Primary Key: Alternate Key: Networking terms and concepts Super Key Structured Query Language (SQL) Introduction to open source based software Advantages of using SQL: Concept of Network Security Types of SQL Statements Viruses Data Definition Language (DDL) statement Create table Drop table Alter table Data Manipulation Language (DML) statement Select Update Delete Insert Transaction Control Statement What do you understand by the term Freeware and Shareware? Write a note on Apache server. Write the components of Mozila/Apache software suite. Write down any two applications of PHP. Explain W3C. Security Threats Cyber Crime and Cyber Law Give full forms of the following: A) CDMA B) GSM C) FTP D) SLIP E) TCP/IP F) WLL 8

10 G) EDGE H) FLOSS I) GNU J) FSF K) POP Illustrate the layout for connecting 5 computers in a Bus and a Star topology of Networks. (b) What is a spam mail? (c) Differentiate between ftp and http. 1 (d) Out of the following, which is the fastest (i) wired and (ii) wireless medium of communication? Infrared, Coaxial Cable, Ethernet Cable, Microwave, Optical Fiber (e) What is Worm? How is it removed? (f) Out of the following, which all comes under cyber crime? (i) Stealing away a brand new computer from a showroom. (ii) Getting in someone s social networking account without his consent and posting pictures on his behalf to harass him. (iii) Secretly copying files from server of a call center and selling it to the other Organization. (iv) Viewing sites on a internet browser. L) SMTP M) NTP N) IMAP O) PPP P) NFS PREPARE YOURSELF FOR THE SCHOOL Happy Vacations!!! GOD Bless!!! 9 Created By- Sunil Kumar Verma, PGT Computer Science-083

K.V. NO 1 ARMAPUR Computer Science- XII Summer Vacation Home Assignment

K.V. NO 1 ARMAPUR Computer Science- XII Summer Vacation Home Assignment-2017-18 By- Computer Science Home Assignment 2017-18 HOME ASSIGNMENT FOR SUMMER VACATION 2017-18 FIRST WEEK C++ Revision Tour MLP