Created
February 24, 2019 16:37
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abstract class Books( | |
val author: String, | |
val name: String, | |
val special: String, | |
val price: Double | |
) { | |
abstract fun printDescription() | |
} | |
abstract class Fiction( | |
author: String, | |
name: String, | |
price: Double, | |
val genre: String | |
) : Books( | |
author, | |
name, | |
"Художественная литература", | |
price | |
) | |
abstract class Applied( | |
author: String, | |
name: String, | |
price: Double, | |
val genre: String | |
) : Books( | |
author, | |
name, | |
"Прикладная литература", | |
price | |
) | |
abstract class Study( | |
author: String, | |
name: String, | |
price: Double, | |
val subject: String | |
) : Books( | |
author, | |
name, | |
"Учебная литература", | |
price | |
) | |
class Novel( | |
author: String, | |
name: String, | |
price: Double | |
) : Fiction( | |
author, | |
name, | |
price, | |
"Роман" | |
) { | |
override fun printDescription() = | |
println("$special, '$name' ($author), Жанр: $genre, Цена: $price $") | |
} | |
class Psychology( | |
author: String, | |
name: String, | |
price: Double | |
) : Applied( | |
author, | |
name, | |
price, | |
"Психология" | |
) { | |
override fun printDescription() = | |
println("$special, '$name' ($author), Жанр: $genre, Цена: $price $") | |
} | |
class Mathematics( | |
author: String, | |
name: String, | |
price: Double | |
) : Study( | |
author, | |
name, | |
price, | |
"Математика" | |
) { | |
override fun printDescription() = | |
println("$special, '$name' ($author), Предмет: $subject, Цена: $price $") | |
} | |
fun main() { | |
val greenMile = Novel( | |
author = "Стивенг Кинг", | |
name = "Зеленая Миля", | |
price = 12.0 | |
) | |
val howToWinFriendsAndInfluencePeople = Psychology( | |
author = "Дейл Карнеги", | |
name = "Как завоёвывать друзей и оказывать влияние на людей", | |
price = 3.99 | |
) | |
val geometry10_11 = Mathematics( | |
author = "Атанасян", | |
name = "Геометрия для 10-11 классов", | |
price = 10.0 | |
) | |
val books = listOf(greenMile, howToWinFriendsAndInfluencePeople, geometry10_11) | |
books.forEach { book -> | |
book.printDescription() | |
} | |
} |
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