using System;

namespace prg

{

​

class Kniga

{

     public string title, author;

     public int release, amount;

     public double price, priceFull;

     public Kniga() 

     {

          Console.Write("Insert book title:");

          title = Console.ReadLine();

          Console.Write("Insert year of release:");

          release = int.Parse(Console.ReadLine());

          Console.Write("Insert amount:");

          amount = int.Parse(Console.ReadLine());

          Console.Write("Insert price:");

          price = double.Parse(Console.ReadLine());

          Console.Write("Insert author:");

          author = Console.ReadLine();

          priceFull = amount * price;

} 

​

class All 

{

    Kniga[] libraryH;

     public All() 

     {

          int broi;

          do

          {

               broi = 0;

               Console.Write("Insert amount of titles");

               broi = int.Parse(Console.ReadLine());

          } while (broi<1);

          libraryH = new Kniga[broi] ;

     } 

​

     public void FillLibrary() 

     {

          for (int i=0;i<libraryH.Length;i++) 

          {

               libraryH[i] = new Kniga();

          } 

     }

​

     public void FilterLibrary() 

     {

          for (int i=0;i<libraryH.Length;i++) 

          {

               for (int j=0;j<libraryH.Length;j++) 

               {

                    if (i!=j) 

                    {

                         if (libraryH[i].author==libraryH[j].author)

                         {

                              Console.WriteLine("Author: {0} Title: {1} " ,libraryH[i].author,libraryH[i].title);

                         } 

                    }                     

               } 

          } 

     } 

​

     public void PriceOfAll() 

     {

          double priceAll = 0;

          for (int i=0;i<libraryH.Length;i++) 

          {

                priceAll+= libraryH[i].priceFull;

          } 

          Console.WriteLine("Library’s full book price {0}", priceAll);

     } 

​

     public void Search() 

     {

          string searchVal = Console.ReadLine();

          for (int i=0;i<libraryH.Length;i++) 

          {

                 if (searchVal==libraryH[i].title)

                 {

                       Console.WriteLine("Title: {0} Author: {1}; Year: {2}; Amount: {3}; Price: {4};" , libraryH[i].title, libraryH[i].author, libraryH[i].release, libraryH[i].amount, libraryH[i].price);

                 }

          } 

     } 

} 

​

class Program

{

     public static void Main() 

     {

           All x = new All();

           x.FillLibrary(); x.FilterLibrary(); x.PriceOfAll(); x.Search();

           Console.ReadLine();

     } 

} 

}} 

​

​