namespace Bookman;

​

class Bookman

{

    struct Book

    {

        public string? title;

        public string? author;

        public string? genre;

        public string? publisher;

        public int year;

        public string isbn;

        public string note;

    }

​

    private static string UserInput(string prompt)

    {

        string? input;

​

        Console.WriteLine(prompt);

        input = Console.ReadLine();

        input = (input == null) ? "" : input;

        input.Trim();

        return input;

    }

​

    static void Main(string[] args)

    {

        const string bookFile = "books.txt";

        Book myBook;

​

        myBook.title = UserInput("Titolo");

        myBook.author = UserInput("Autore");

        myBook.genre = UserInput("Genere");

        myBook.publisher = UserInput("Editore");

        myBook.year = int.Parse(UserInput("Anno"));

        myBook.isbn = UserInput("ISBN");

        myBook.note = UserInput("Nota");

​

        string bookString = $"{myBook.title}|{myBook.author}|{myBook.genre}|{myBook.publisher}|{myBook.year}|{myBook.isbn}|{myBook.note}";

​

        if(!File.Exists(bookFile))

        {

            File.Create(bookFile);

        }

​

        // Aggiunge la stringa di dati rappresentante la variabile myBook.

        File.AppendAllText(bookFile, bookString + "\n");

    }

}