C# - C Sharp: Practical 12: Books Management System

BOOKS MANAGEMENT SYSTEM

In this exam, you’ll have to create a Books Management system. The system allows input, list, search … books.

1. Create an interface name IBook  contains these properties and methods:

a. Properties

   · ID (int)

   · Name (string)

   · PublishDate (DateTime)

   · Author (string)

   · Language (string)

   · AveragePrice (float) – Read only property

b. Methods

   · void Display()

2. Create a class name Book:

a. Implements the IBook interface in step 1

b. The method Display will print all Name, PublishDate, Author, Language and AveragePrice of the book to the console

c. Declare an array name PriceList type int has size of 5 elements 

d. Create an indexer uses the array PriceList in step 2c.

e. Create a method named Calculate to set AveragePrice = average of 5 int elements in PriceList array.

3. Display  a tasks menu to choose:

   1. Insert new book
   2. View list of books
   3. Average Price
   4. Exit

4. If user type 1 from keyboard then:

a. Create a new Book  instance and input Name, PublishDate, Author, Language and then ask user to enter 5 prices and set to the instance indexer

   - The ID is auto increament ( ID++ )

   - Be sure to check format of PublishDate

b. Create a Dictionary<int, Book> to keep the Book instance in step a with key = ID and value = the book instance

5. If user type 2 from keyboard then:

Loop from all book instances in the Dictionary<int, Book> then executes the Display method from IBook interface.

6. If user type 3 from keyboard then:

Loop from all book instances in the Dictionary<int, Book>  then executes the Calculate method and then execute the Display method.

7. While user not chooses Exit (type 4 from keyboard) then go back to the menu step 3 to ask user chooses an option.