public static void Main() { Book book1 = new Book(); Book book2 = new Book(); TextBook book3 = new TextBook(); TextBook book4 = new TextBook(); TextBook book5 = new TextBook(); CoffeeTableBook book6 = new CoffeeTableBook(); CoffeeTableBook book7 = new CoffeeTableBook(); CoffeeTableBook book8 = new CoffeeTableBook(); book1.ISBN = 746382918; book1.Title = "This is Life"; book1.Author = "One, Any"; book1.Price = 32; book2.ISBN = 847362918; book2.Title = "Up and Down"; book2.Author = "One, Any"; book2.Price = 113; book3.ISBN = 948367123; book3.Title = "Algrebra"; book3.Author = "Guy, That"; book3.Price = 15; book4.ISBN = 832749210; book4.Title = "Geometry"; book4.Author = "Guy, That"; book4.Price = 90; book5.ISBN = 109238750; book5.Title = "English"; book5.Author = "Girl, That"; book5.Price = 45; book6.ISBN = 923850178; book6.Title = "Sports"; book6.Author = "Guy, Some"; book6.Price = 30; book7.ISBN = 622934749; book7.Title = "Romance"; book7.Author = "Girl, Some"; book7.Price = 105; book8.ISBN = 847392301; book8.Title = "Politics"; book8.Author = "Guy, A"; book8.Price = 65; Console.WriteLine(); Console.WriteLine(" {0} - '{1}' by : {2} will cost {3}", book1.ISBN, book1.Title, book1.Author, book1.Price.ToString("C")); Console.WriteLine(); Console.WriteLine(" {0} - '{1}' by : {2} will cost {3}", book2.ISBN, book2.Title, book2.Author, book2.Price.ToString("C")); Console.WriteLine(); Console.WriteLine(" {0} - '{1}' by : {2} will cost {3}", book3.ISBN, book3.Title, book3.Author, book3.Price.ToString("C")); Console.WriteLine(); Console.WriteLine(" {0} - '{1}' by : {2} will cost {3}", book4.ISBN, book4.Title, book4.Author, book4.Price.ToString("C")); Console.WriteLine(); Console.WriteLine(" {0} - '{1}' by : {2} will cost {3}", book5.ISBN, book5.Title, book5.Author, book5.Price.ToString("C")); Console.WriteLine(); Console.WriteLine(" {0} - '{1}' by : {2} will cost {3}", book6.ISBN, book6.Title, book6.Author, book6.Price.ToString("C")); Console.WriteLine(); Console.WriteLine(" {0} - '{1}' by : {2} will cost {3}", book7.ISBN, book7.Title, book7.Author, book7.Price.ToString("C")); Console.WriteLine(); Console.WriteLine(" {0} - '{1}' by : {2} will cost {3}", book8.ISBN, book8.Title, book8.Author, book8.Price.ToString("C")); Console.ReadLine(); }
static void Main(string[] args) { Book book = new Book(); book.Author = "Mr Men"; book.Title = "BOok Title"; book.Isbn = "1234"; book.Price = 12.50; Console.WriteLine(book); TextBook tBook = new TextBook(); tBook.Author = "Mr Men"; tBook.Title = "Invalid Price"; tBook.Isbn = "1234"; try { tBook.Price = 12.50; } catch (IOException e) { Console.WriteLine(e.Message); } Console.WriteLine(tBook); TextBook tBook2 = new TextBook(); tBook2.Author = "Mr Men"; tBook2.Title = "Valid Price"; tBook2.Isbn = "1234"; try { tBook2.Price = 22.50; } catch (IOException e) { Console.WriteLine(e.Message); } Console.WriteLine(tBook2); CoffeTableBook ctBook = new CoffeTableBook(); ctBook.Author = "Mr Men"; ctBook.Title = "Invalid Price"; ctBook.Isbn = "1234"; try { ctBook.Price = 34.99; } catch (IOException e) { Console.WriteLine(e.Message); } Console.WriteLine(ctBook); CoffeTableBook ctBook2 = new CoffeTableBook(); ctBook2.Author = "Mr Men"; ctBook2.Title = "Valid Price"; ctBook2.Isbn = "1234"; try { ctBook2.Price = 100; } catch (IOException e) { Console.WriteLine(e.Message); } Console.WriteLine(ctBook2); }