Computer Science. (330) Tutor Mark Assignment

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1 Computer Science (330) Tutor Mark Assignment Max. Marks: 20 Note: (i) All questions are compulsory. The marks alloted for each question are given at same place. (ii) Write your name, enrolment number, AI name and subject etc. on the top of the first page of the answer sheet. 1. Attempt any 1 (2 marks each) a. Arrange the following operations according to a data processing cycle and write the name of the operation. (i) A person inputs data of 50 students containing their name, age and class. (ii) Students information is printed on a paper. (iii) Students information is copied on a CD. (iv) Students data is processed to find the no. of students of same age b. (i) Define the term Record 1 (ii) Following are two types of records. Identify fixed length and variable length records among these- (A) Record A Record B Record C Record D 20 bytes 30 bytes 28 bytes 22 bytes 100 bytes ½ (B) Record A Record B Record C Record D 30 bytes 30 bytes 30 bytes 30 bytes 120 bytes ½ c. Mohan creates a folder of his name in My Documents. Then he creates its shortcut on the desktop. After some time, he wants to change its name to ABC, then he makes a text file Biodata and saves this file in folder ABC. Write the steps which Mohan follows to do the above activities. 2 d. Sunil wants to view the files stored in (i) the hard disk (ii) the external storage. He also wants to check the space available in C and D drives. Write the steps Sunil will follow to do the above.2 2. Attempt any 1 (2 marks each) a. (i) What is the full form of LAN and WAN? 1 Computer network in two banks situated in two different cities about 100km apart, are connected through telephone wires, identify the type of network? ½ Computer Science 101

2 (ii) Identify the type of network topology used in the following: In a LAN connection, seven computers are connected to a central computer. Computer No. 2 wants to send a message to computer no. 6, but the message, instead of going directly, goes via the central computer only. ½ b. Write the name of the service used by the person in the following situation: (a) Ram plans to go on a holiday trip. He wants to book train tickets, hotels etc. through Internet and makes payment through credit cards. 1 (b) A company General Manager wants to conduct meeting with his junior staff members who are located in different branches. These staff members are not required to be present physically but at the same time they can be able to see each other. 1 c. Evaluate the following C++ expressions. (i) int a = 5, b = 7, c; 1 c= a * a + b * b; (ii) int i = 10, j = 20, k; 1 k = ( i + j)/3; d. What will be the value of i after execution of the following C++ expressions: (i) float i, j, k; 1 j = ; k = ; i = j + k; (ii) int j = 8; 1 float k = 5.2, i; i = (( j*j k* 5) *2); 3. Attempt any 1 (2 Marks each) a. Write a function for evaluating the area of a rectangle having sides a and b. Both sides and the area should be taken as float values. 2 b. Write a program which accepts 10 integers in an array and then arrange the array in ascending order. 2 c. Write a structure specification in C++ for the record given below: 2 Name_ EnggCollege char (30) Name_University char (30) Year_ Estd int (4) No_Students int (5) Name of this structure will be ENGGCOL 2 d. Consider the class student given below: 2 class student 102 Computer Science

3 char name [30], fathers_name [30], grade [1] ; int Roll_no [5], marks [3] ; } ; Write a Parameterized constructor for this class which can take the value of Name and Roll no. and marks of the students. Display the grade as per the following criteria. Marks > = 90 then Grade A Marks < 90 and marks >=70 then grade B Marks < 70 then grade C 2 4. Attempt any 1 (4 marks each) a. (i) Name any four input and four output devices. 2 (ii) Write the name of the input device you will use, if you want to upload your photograph in the computer. 1 (iii) Write the name of the device used in the Banks to read the special characters printed with magnetic material on the cheques. 1 b (i) What will be the value of counter and num variable after the execution of the following program. 2 void main ( ) int counter = 1 ; int digit = 0, num = 2; while (digit < = 10) ++ counter; num ++; ++ digit; cout << counter; cout << num; } (ii) what will be the output of the following C++ code? 2 # include <stdio.h> # include <iostream.h> void main ( ) char A [100]; char B [160]; cout << Input string ; gets (A); puts (A); tolower (A); cout << Input new string ; gets (B); strcpy (A,B); cout << Final String is << A ; Computer Science 103

4 } c. Write the equivalent C++ expression for the following algebraic expressions: (i) a 2 3 C (a+b) 2 (ii) (3ab/c) + (2bc/a) 2 d. (i) Rachna plans a party and designs an invitation card in WORD. She saves this file as greeting.docx in My documents. Now she wants to send this card attached with an to 5 of her friends using single without typing it 5 times. Write the steps she follows. 3 (ii) Write the various categories of organisation which are hosting the mail server. 1 Example (.com) 5. Attempt any 1 (4 marks each) a. class Book char book_name[20], writer [20]; int no_of_pages; public: void read(); void show(); }; class Tbook: private Book int no_of_lessons, no_of_exercises; protected: int standard; public: void readtbook(); void showtbook(); }; class sciencebook: public tbook char topic[20]; public: void readsciencebook(); void showsciencebook(); }; (i) Name the data members and member functions which can be accessed from the member function of class sciencebook. 2 (ii) Name the member functions which can be accessed by an object of (a) class tbook (b) class sciencebook 2 b. Write a C++ program as per the following instructions: 104 Computer Science

5 (i) Write a C++ code which reads the contents of a text file first_file.txt 1 (ii) Write a function named vowel_words() which will segregate the words starting with vowels from the first_file.txt 2 (iii) Write a C++ code which writes the resultant words to the output file, second_file.txt. 1 Example: Content of first_file I am going to buy an umbrella Output in second_file.txt I am an umbrella c. Write a menu driven program of arithmetic operation on two numbers. User will select the operation (+, -, *, /) and will input the number (any two). Write separate functions for each arithmetic operation. 4 funct_add funct_subtract funct_multiply funct_division d. Write a program to create an array which stores the details of 25 students (name, rollno, marks in four subjects) and print the list of students who have failed in more than one subject (passing marks >= 30) 4 Project Attempt any 1 (6 Marks) a. A class Student has three data members: student_name, enrolment_no, marks of 5 subjects and member function to assign streams on the basis of the criteria given below: Average Marks Stream >90% Computer Science > 80 90% Science >75 80% Commerce >70 75% Arts Below 70% Vocational Write a C++ program to calculate average marks of each student and display student name, enrolment no, and their stream. 6 b. Consider A, B, C as three arrays of size m,n and m + n respectively. Array A is stored in ascending order whereas array B is stored in descending order. Write a C++ program to produce a third array C, containing all the data of arrays A and B and arranged in descending order. Display the data of array C only. 6 c. (i) Write a definition for a structure EMPINF that stores information about an employee such as empid, empname, address, salary, dateofjoining, telephone_no. 2 (ii) The address member of EMPINF stores the information houseno, area, city and pincode. 1 (iii) The dateofjoining member of EMPINF stores information day, month and year. 1 (iv) Write a function to the information of an employee depending upon the employee number given. Computer Science 105

6 2 d. (i) Write the output for the following program: 3 int main() clrscr(); int a[] = 1,2,3,4,5}; int l, *k; k = &a[0]; for (l=0;l<5;l++) cout<<*k<< \t ; k++; } return 0; } (ii) Declare an array of 25 Aadhar card holders which consists of five data values viz., id_no, firstname, lastname, address and age. Write a program that prints id_no, name for all these persons whose age is between 18 and Computer Science