This is a program of maintaining the various work carried out in a library. My syntax and use of classes is wrong. Could anyone please correct the errors in the program and also handle the exceptions for me. I need it ASAP. Thanx a lot...
Code:
class Program
{
static public int[] student = new int[100];
static public int[] i = new int[5];
static public int[] b = new int[5];
static public int issuelimit = 2;
static public string bookname;
static public int id;
static public int bookcount;
static public int bookid;
static public int choice=0;
static public char Repeat;
static void Main(string[] args)
{
int choice=1;
Console.WriteLine(" What do u want to do?\n");
Console.WriteLine("1.Add a book to the Library");
Console.WriteLine("2.Register a user ");
Console.WriteLine("3.Issue a book");
Console.WriteLine("4.Display list of Registered user");
Console.WriteLine("5.Display list of books in library");
Console.WriteLine("6.Exit");
choice = Convert.ToInt16(Console.ReadLine());
LibMng lb = new LibMng();
switch (choice)
{
case 1:
{
do
{
Console.WriteLine("Enter the name of the book and the author's name: ");
string bookname = Convert.ToString(Console.ReadLine());
string author = Convert.ToString(Console.ReadLine());
bookcount++;
bookid++;
Console.WriteLine("\nDo you wish return more from the same card??(y/n)");
Repeat = Convert.ToChar(Console.ReadLine());
}
while (Repeat == 'y' || Repeat == 'Y');
break;
}
case 2:
{
Console.WriteLine("Enter the name and address of user: ");
string studentname = Convert.ToString(Console.ReadLine());
string studentadd = Convert.ToString(Console.ReadLine());
Console.WriteLine("Enter the card ID");
id = Convert.ToInt16(Console.ReadLine());
do
{
if (student[id] != 0)
{
lb.bookReturn();
}
else
{
Console.WriteLine("Till no book is issued to this card");
break;
}
Console.WriteLine("\nDo you wish return more from the same card??(y/n)");
Repeat = Convert.ToChar(Console.ReadLine());
}
while (Repeat == 'y' || Repeat == 'Y');
break;
}
case 3:
{
Console.WriteLine("Enter the Student id");
id = Convert.ToInt16(Console.ReadLine());
do
{
if (student[id] < 2)
{
lb.Issue();
}
else
{
Console.WriteLine("Sorry no more books can be issued");
break;
}
Console.WriteLine("\nDo you wish to issue more to the same card??(y/n)");
Repeat = Convert.ToChar(Console.ReadLine());
}
while (Repeat == 'y' || Repeat == 'Y');
break;
}
case 4:
{
do
{
Console.WriteLine("the list of registered student is:");
foreach (int a in Student)
{
Console.WriteLine("Name: ", a.studentname);
Console.WriteLine("StudentId: {0}", a.studentid);
Console.WriteLine("Number of books issued: {0}", a.NoOfBooksIssues);
}
Console.WriteLine("do you wish to continue??(y/n)");
} while (Repeat == 'y' || Repeat == 'Y');
break;
}
case 5:
{
do
{
Console.WriteLine("the list of books in library:");
foreach (int b in BookLibrary)
{
Console.WriteLine("Book Title: {0}", b.bookname);
Console.WriteLine("Book Id: {0}", b.bookid);
Console.WriteLine("Author name: {0}", b.author);
}
Console.WriteLine("do you wish to continue??(y/n)");
} while (Repeat == 'y' || Repeat == 'Y');
break;
}
case 6:
{
break;
}
}
Console.ReadLine();
}
}
class LibMng : Program
{
public void Issue()
{
Console.WriteLine("Enter The Book id ");
int reqbook = Convert.ToInt32(Console.ReadLine());
if (reqbook == bookid)
{
if (i[0] != 0)
{
i[0]--;
Console.WriteLine("The Book is issued to Card{0}", id);
student[id]++;
}
else
Console.WriteLine("Book is not available");
}
}
public void display()
{
Console.WriteLine("the books taken are: ");
}
public void chckAvail()
{
Console.WriteLine("Enter The Book id");
int req = Convert.ToInt32(Console.ReadLine());
if (req == bookid)
{
if (i[0] != 0)
{
Console.WriteLine("The number of copy of the Book is::{0}", i[0]);
}
else
Console.WriteLine("Book is not available");
}
}
}
class BookLibrary: Program
{
public int bookcount;
public int bookid;
public string bookname;
public string booktitle;
public BookLibrary(int bookcount, int bookid, string bookname, string booktitle)
{
this.bookcount = bookcount;
this.bookid = bookid;
this.bookname = bookname;
this.booktitle = booktitle;
}
}
class Student
{
public int studentcount;
public int studentid;
public string studentname;
public int noOfbookissues = 0;
public Student(int studentcount, int studentid, string studentname, int noOfbooksissued)
{
this.studentcount = studentcount;
this.studentid = studentid;
this.studentname = studentname;
this.noOfbookissues = noOfbookissues;
}
}
class IssueReturn: Program
{
public void bookReturn()
{
Console.WriteLine("Enter The Book ID");
int req1 = Convert.ToInt32(Console.ReadLine());
if (req1==bookid)
{
if (i[0] != 1)
{
i[0]++;
Console.WriteLine("The Book is returned from Card {0}", id);
student[id]--;
}
else
Console.WriteLine("Till the Book is not issued to this Card");
}
}
}
}
}
Comment