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Library Book Management with Class Inheritance

Swift Medium classes

Task «Library Book Management with Class Inheritance»

Create a class `LibraryItem` with fields `title` (String), `year` (Int) and a method `description()` that returns a string in the format "Title: \(title), Year: \(year)". Then create a class `Book` that inherits from `LibraryItem`, with an additional field `author` (String). Override the `description()` method so that it returns a string in the format "Book: \(title) by \(author), \(year)". In the main program, read 6 lines: first 3 lines to create a `LibraryItem` object (title, year), then 3 lines to create a `Book` object (title, year, author). Output the results of calling `description()` for each object on separate lines. It is guaranteed that the year is an integer.

Input Format

Six lines: the first line is the name of the first object (LibraryItem), the second is the year of the first object, the third is the name of the second object (Book), the fourth is the year of the second object, the fifth is the author of the second object, and the sixth is an empty line (not used).

Output Format

Two strings: the first is the result of description() for LibraryItem, the second is the result of description() for Book.

Examples

Example 1

INPUT
7 ADD Война и мир Толстой 1869 ADD Преступление и наказание Достоевский 1866 ADD Анна Каренина Толстой 1877 FIND_AUTHOR Толстой FIND_YEAR 1870 FIND_AUTHOR Пушкин
OUTPUT
Title: Война и мир, Year: 1869 Book: Преступление и наказание by Достоевский, 1866

Example 2

INPUT
6 add 1984 GeorgeOrwell 1949 add BraveNewWorld AldousHuxley 1932 find GeorgeOrwell borrow 1984 borrow 1984 find GeorgeOrwell
OUTPUT
Title: add, Year: 1984 Book: BraveNewWorld by AldousHuxley, 1932
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