ITL Public School Pre-Board( ) Computer Science (083) Time:3 hrs M. M: 70

Size: px

Start display at page:

Download "ITL Public School Pre-Board( ) Computer Science (083) Time:3 hrs M. M: 70"

Mavis Burns
6 years ago
Views:

1 ITL Public School Pre-Board(04-5) Date:..04 Class:XII Computer Science (08) Time: hrs M. M: 70 General Instructions:. Programming Language C++. Try to give Examples a) What is the difference between Actual Parameter and Formal Parameters? Also, give a suitable C++ code to illustrate both. b) Rewrite the following program after removing the syntactical errors (if any). Underline each correction. include <iostream.h> include <stdio.h> class MyStudent int StudentId=00; char Name[0]; PUBLIC MyStudent( ) void Register( ) cin>>studentid; gets(name); void Display( ) cout<<studentid<< : <<Name<<endl; void main( ) MyStudent MS; Register.MS( ); MS.Display( ); c) Find the output of the following program: #include<iostream.h> struct STOCK int Ino,Qty; ; void Buy(STOCK &I,int TQ=) I.Qty+=TQ; void main( ) STOCK I[]=00,50,00,50; XII of 8

2 Buy(I[],5); cout<<i[].ino<<":"<<i[].qty<<endl; Buy(I[0],0); cout<<i[0].ino<<":"<<i[0].qty<<endl; Buy(I[]); cout<<i[].ino<<":"<<i[].qty<<endl; d) Find the output of the following program: #include<iostream.h> #include<ctype.h> void Encode(char Text[ ]) for(int C=0;Text[C];C++) char CH=(Text[C]>='a'&&Text[C]<='z')?Text[C]-:Text[C]; if(ch<='k'&&ch>='a') Text[C]='$'; else if(ch=='e' CH=='I' CH=='M') Text[C]=Text[C]+; else if(ch>='5'&&ch<='8') Text[C]='&'; else if (CH>='a'&&CH<='z') Text[C]=toupper(CH); else Text[C]='*'; void main() char Choice[] = "navodaya59new"; cout<<endl<<endl; Encode(Choice); cout<<choice<<endl; a) What do you understand by Polymorphism? Also, give an example in C++ to illustrate the same. b) Answer the questions (i) and (ii) after going through the following class: class WORK int WorkID; char WorkType; public: ~WORK( ) // Function cout<< Un-Allocated <<endl; void status( ) // Function cout<<workid<< ; <<WorkType<<endl; WORK( ) // Function WorkID=0; WorkType= T ; WORK(WORK &W) // Function 4 WorkID=W.WorkID+; WorkType=W.WorkType+; XII of 8

3 ; (i) Which member function out of function, function,function and function4 shown in the above example of class WORK is called automatically, when the scope of an object gets over? Is it known as Constructor OR Destructor OR Overloaded Function OR Copy Constructor? (ii) Define function and function 4. c) Define a class STATE in C++ with following description : Private members : Name of state (type string) Population (long int) Number of girls under 6 years of age attending school(long int) Total number of girls under 6 years of age (long int) A member function CALC_PER( ) to calculate & return the percentage of girls attending the school as ( Number of girls attending the school/total number of girls*00) Public members : A constructor to initialize name of the state as NOT ALLOTTED A function INSTATE( ) to allow user to enter data for all data members A function OUTSTATE( ) to allow user to view the content of all the data members along with the percentage of girls attending the school. d) Answer the questions (i) to (iv) based on the following: class cloth char category [5]; char description [5]; protected : float price; public : void entercloth ( ); void displaycloth ( ); ; class design : protected cloth char design []; protected : float cost; public: int design; design ( ) void enterdesign ( ); void dispdesign ( ); ; class costing : public cloth float desingfee; float stiching; float cal_cp ( ); protected: float costprice; float sellprice; public: void entercost ( ); void dispcost ( ); costing ( ); ; (i) Write the names of data members which are accessible from objects belonging to class cloth. (ii) Write the names of all members which are accessible from objects belonging to class design. 4 XII of 8

4 (iii) Write the names of all the data members which are accessible from member functions of class costing. (iv) How many bytes will be required by an object belonging to class design? a) An array Arr[5][5] is stored in the memory along the row with each of its element occupying 4 bytes. Find out the Base address and the address of element Arr[0][5], if the location Arr[][] is stored at the address 000. b) Write a function TRANSFORM(int A[ ][],int N,int M) in C++ to swap the elements of first and last column. c) Write a function CHANGE( ) in C++, which accepts a -D array of integer and its size as parameters and divide all those array elements by 7 which are not in the range 70 to 700 and find the square root of all other elements. d) Define functions Oueueinsert( ) to insert nodes and Queuedelete( ) to delete nodes from Queue using Linked List having the following structure for each node: struct Queue char name[0]; int age; Queue *LINK; ; e) Write a function in C++ to perform insertion and deletion operation in a static circular Queue containing student information (represented with the help of an array of structure STUDENT. struct STUDENT int Admnno; char SName[0]; ; f) Obtain the postfix notation for the following infix notation of expression showing the contents of the stack and postfix expression formed after step of conversion: A + B + (C + D * F G)* H g) Evaluate the following postfix notation of expression(show status of stack after execution of each operation): 4, 0, 5, +, *, 5,, /, - 4 a) Observe the program segment given below carefully and answer the question that follows: class Team long TId; char TName[0]; float points; public: void Accept( ); void Show( ); void PointChange( ); long R_TId( ) return TId; ; void ReplacePoints(long Id) fstream File; File.open ( Team.Dat,ios::binary ios::in ios::out); Team T; int Record=0, found=0; while(!file.eof( )) //Statement File.read((char*)&T, sizeof(t))) XII 4 of 8

5 if (Id==T.R_TId( )) cout<< Enter New Points ; T.PointChange (); //Statement File.write((char*)&T,sizeof(T)); Found=; Record++; if(found==) cout<< Record Updated ; File.close( ); Write Statement to save the beginning of record and Statement to take the pointer to the beginning of the record to be updated. a) Write a function in C++ to print the count of the word Me and My (ignoring the case) as an independent word in a text file STORY.TXT. If the file Story.txt content is as follows: My first book was me and My family. It gave me change to be known to the world. The output of the function should be Count of Me/My in file: b) Given a binary file PHONE.DAT, containing records of the following structure type class phonlist char Name[0] ; char Address[0] ; char AreaCode[5] ; char PhoneNo[5] ; public ; void Register( ) ; void Show( ) ; int CheckCode(char AC[ ]) return strcmp(areacode,ac) ; ; Write a function TRANSFER( ) in C++, that would copy all those records which are having AreaCode as DEL from PHONE.DAT to PHONBACK.DAT. 5 a) Differentiate between Candidate key and Primary key in context of RDBMS. b) Consider the following tables Customer_Record and Order_Detail. Write SQL commandsfor statements (i) to (iv) and give output for SQL queries (v) to (viii). 6 Table:Customer_record C_Code Name City Phone C00 Raju Patna 6878 C00 Ali New Delhi 6765 C00 James Patna 6945 C004 Hari New Delhi C005 Toms New Delhi XII 5 of 8

6 Table: Order_Detail O_Code C_Code Date Item Qty Amount A00 C00 -Nov-07 Burger 60 A00 C00 5-Nov-07 Pizza 00 A00 C005 0-Nov-07 Burger 5 00 A004 C004 0-Dec-07 Burger 5 00 A005 C00 5-Dec-07 Hot Dog 40 (i) (ii) (iii) (iv) (v) (vi) To display the name of all customers from Patna. To display C_Code, Name, Item, Qty and Amount for every customer. To display Customer Detail in descending order of customer name. To display City and number of customers from each city. Select A.name, B.item from customer_record A, order_detail b where a.c_code=b.c_code and a.city = New Delhi ; Select O_code, c_code, qty, amount from order_detail where item not in ( Pizza, Hot Dog ); 6 a) State and prove the absorption law algebraically. b) Write the SOP form of a Boolean function G, which is represented in a truth table as follows: U V W G c) Reduce the following Boolean expression using K-map.(SOP) F(w,x,y,z)=Σ(,,6,0,,4) d) Convert the following Boolean expression into its equivalent canonical product of sum form(pos) : A.B C + A.B.C + A.B.C. 7 a) Differentiate between message switching and packet switching. b) Define Firewall. c) When do you prefer XML over HTML and why? d) Compare freeware and shareware. e) Mention any two advantages of Open Source Software over proprietary software. f) Give one suitable example of each URL and Domain Name. g) A National Networking company is planning to start their offices in four cities of UAE to provide regional IT infrastructure support in the field of Culture and Education. The company has planned to set up their head office in Abu Dhabi in three locations and have named their Abu Dhabi Offices as Customer Support, Main Office and Maintenance office. The company s regional offices are located at Dubai, Sharjah and Al Ain. 4 XII 6 of 8

7 A rough layout of the same is as follows Sharjah Dubai Main Office Abu Dhabi Customer Support Maintenance office Al Ain Approximate distance between these offices as per network survey team is as follows: From To Distance Main Office Customer Support 5 Km Main Office Maintenance Office Km Main Office Dubai Office 80 Km Main Office Al Ain Office 0 Km Main Office Sharjah Office 5 Km In continuation of the above, the company experts have planned to install the following number of computers in each of their offices: Main Office 0 Customer Support 5 Maintenance Office 55 Al Ain Office 55 Dubai 55 Sharjah 55 (i) (ii) (iii) Suggest network type (out of LAN, MAN, WAN) for connecting each of the following set of their offices: Main Office and Maintenance Office Main Office and Sharjah Office Which device you will suggest to be procured by the company of connecting all the computers with in each of their offices out of the following devices? Modem Telephone Switch/Hub Which of the following communication medium, will you suggest to be procured by the company for connecting their local offices in Abu Dhabi for distortion free, effective and fast communication? Telephone Cable Ethernet Cable Optical Fiber XII 7 of 8

8 (iv) Suggest a cable/wiring layout for connecting the company s local offices located in Abu Dhabi. Also suggest an effective method/ technology for connecting the company s regional offices Al Ain, Dubai and Sharjah. XII 8 of 8

DELHI PUBLIC SCHOOL BOKARO STEEL CITY

DELHI PUBLIC SCHOOL BOKARO STEEL CITY ASSIGNMENT FOR THE SESSION 2015-2016 Class: XII Subject : Computer Science Assignment No. 3 Question 1: (a) What is the difference between Call by Value and Call by