Question

bject Oriented Programming Home My units BISY2003/1SY2006/ISY211 12 2020 Assessments A4 (Practical 40%) estion 4 yet wered Create a C# application for Library that allows you to enter data for books and saves the data to a file named Books.txt. Create a Book class that contains fields for title, author, number of pages, and price of the book and ToString() method. The fields of records in the file are separated with asterisk (*). Expecting sentinel value for ending the process of writing to file is "-000". (3 marks) ked out of Flag estion E.g. of a record in the file Books.txt: 1*How to talk to anyone*Leil Lowndes*345*15.75 using System; using static System.Console; using System.IO; class Library { static void Main() { 17 Your code as answer } 1 B 1 E

Answer 1

C Sharp Program:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;

namespace Library
{
//Book Class
class Book
{
private String title;
private String author;
private int numPages;
private double price;

//Constructor
public Book(String t, String a, int np, double p)
{
title = t;
author = a;
numPages = np;
price = p;
}

//ToString method
public String ToString()
{
return title + "*" + author + "*" + numPages + "*" + price;
}
}

class Program
{
//Main method
static void Main(string[] args)
{
String tTitle, tAuthor;
int tNumPages;
double tPrice;
int cnt = 1;

//Opening file for writing
using (StreamWriter writer = new StreamWriter("Books.txt"))
{
while (true)
{
Console.Write("\nEnter title of the book(000 to end): ");
tTitle = Console.ReadLine();

//Checking title
if (tTitle.Equals("000") == true)
{
break;
}

Console.Write("Enter author of the book: ");
tAuthor = Console.ReadLine();

Console.Write("Enter number of pages in the book: ");
tNumPages = Convert.ToInt32(Console.ReadLine());

Console.Write("Enter price of the book: ");
tPrice = Convert.ToDouble(Console.ReadLine());

//Creating Book object
Book b = new Book(tTitle, tAuthor, tNumPages, tPrice);

//Writing to file
writer.WriteLine(cnt.ToString()+"*"+b.ToString());
cnt++;
}
}

Console.ReadLine();
}
}
}
____________________________________________________________________________________________

Sample Run:

Books.txt x Program.cs 1* How to Talk to anyone*Leil Lowndess*450*18.54 2*My Autobiography*Tim Henry*189*5.98 X х III file:///c/users/saibabu/documents/visual studio 2010/Projects/Library/Library/bin/Debug/Library.... Enter title of the book<099 to end): How to Talk to anyone Enter author of the book: Leil Lowndess Enter number of pages in the book: 450 Enter price of the book: 18.54 Enter title of the book(000 to end): My Autobiography Enter author of the book: Tim Henry Enter number of pages in the book: 189 Enter price of the book: 5.98 Enter title of the book(oud to end): 000