public int ReturnBook(LibraryBook book)
{
if (!book.isInStack())
{
book.PutToStack();
BookList.Remove(book);
return(1);
}
return(0);
}
public int TakeBook(LibraryBook book)
{
if (book.isInStack())
{
book.GetFromStack();
BookList.Add(book);
return(1);
}
return(0);
}
