Programming & Computer Science Answers

Q.No.1. There are total 50 employees working in XYZ organization who have a policy of Bonus via lucky draw. They want to automate the process to select employees randomly for lucky draw.     

Write code for a console application where you have to declare an integer array that store employee numbers. Employee number will be provided as input to a function fillEmployee(int eNum). Make sure, employee number, must be 4 digit unique number otherwise repeat the process till you get valid input.  

Now the company wants to announce employee through a Lucky Draw. You are required to generate random 4 digit employee number and compare with existing employee numbers (using Random class of C#). Repeat the process till you match a valid employee number and then print “congratulation” message along with winner’s employee number. 

Answer the following short questions. Your answer should be precise.

a)     Can we declare base class constructor or destructor as virtual if yes then why we want to do?

b)    How we can declare a class as abstract and why we need abstract classes? 

c)     Why we cannot able to create objects of abstract classes give reasonable justification of that.           

You have been developing a small commercial Software for numeric operations. You are working on the calculation of areas and volume of different shapes. Based on your software complete these tasks:

a)     Create a function template named as shape() that accepts three arguments in such a way that first and second will be the dimension like base and height and the third will be the name of the shape. The shape() function displays the dimension values and the area of the shape. The function returns the area to the calling program; the area is the same data type as the parameter. [Note: Design a main program such that, it input the values of only those shapes whose area is computable on the bases of base and height only]

b)     Create another function template named as show_master()that accepts two arguments. The first is index and the second argument is an array of 10 values. The show_master() function will returns the specified index value.

You are required to code for “Students attendance” system to keep record of attendance of complete semester.    

Write a class AttendaceRecord having properties section, regNumber, studentName, AttendanceStatus (a char either P or A) and a function to mark attendance. Also create a List of type AttendanceRecord and call the required function/s to mark attendance when required. The system should be able to perform the following functions:

·        View attendance record of given student to show Student name, Registration number, percentage of total presents/absents and total attendance record (so far)

·        Calculate Short attendance to display all those students whose attendance is below the given threshold value (given in percentage).

You have been developing a small commercial Software for numeric operations. You are working on the calculation of areas and volume of different shapes. Based on your software complete these tasks:

a)     Create a function template named as shape() that accepts three arguments in such a way that first and second will be the dimension like base and height and the third will be the name of the shape. The shape() function displays the dimension values and the area of the shape. The function returns the area to the calling program; the area is the same data type as the parameter. [Note: Design a main program such that, it input the values of only those shapes whose area is computable on the bases of base and height only]

Create another function template named as show_master()that accepts two arguments. The first is index and the second argument is an array of 10 values. The show_master() function will returns the specified index value

use a proper iterative structure to write a programin c++ that will read names and exam scores of students saving them in two different arrays. the class average is to be calculated and printed at the end of the report score can range from 0 to 100. the last record contains a blank name and a score 999 and is not be included in the calculations

write a program is c++ using nested if structure to ask a user about students assigment marks, test marks and exam marks. the program will proceed step by step (it will go to read value of the next assigment component only if the previous assemrny id passed and will display a message for each of the assigment components whether it is fulfilled or not. assume the followig statement ass a passing critera cheeg

As another example, consider a circuit-switched network that connects computers in two remote offices of a private company. The offices are connected using a T-1 line leased from a communication service provider. There are two 4 × 8 (4 inputs and 8 outputs) switches in this network. For each switch, four output ports are folded into the input ports to allow communication between computers in the same office. Four other output ports allow communication between the two offices. Figure shows the situation.

As a trivial example, let us use a circuit-switched network to connect eight telephones in a small area. Communication is through 4-kHz voice channels. We assume that each link uses FDM to connect a maximum of two voice channels. The bandwidth of each link is then 8 kHz. Figure shows the situation. Telephone 1 is connected to telephone 7; 2 to 5; 3 to 8; and 4 to 6. Of course the situation may change when new connections are made. The switch controls the connections

Create a class called Transmitter. It has three unsigned int private data members: pay_load,

parity and data_packet; It has one function called parity_bit(). It calculates parity bit by XORing

all pay_load bits and assign the value to parity. By using function get pay_load(), pay_load is got.

data_packet is calculated by multiplying parity_bit with 32768 and add the product with (pay_load

– 32768). Create another class called Receiver. It has unsigned int private data members Rx_Pkt

, Rx_Data and E_Flag. Rx_Data is got from Rx_Data as given below. First E_Flag is calculated

from Rx_Pkt by XORing all bits. If E_Flag is zero, then Rx_Data = Rx_Pkt – 32768, Else a

message should warn about corrupted packet. Derive a class called Tranceiver from the above two

classes and check the functionalities. Use any other functions if needed.