NoahO6617

fun main() {
    val morningNotification = 51
    val eveningNotification = 135

    printNotificationSummary(morningNotification)
    printNotificationSummary(eveningNotification)
}

fun printNotificationSummary(numberOfMessages: Int) {
    if (numberOfMessages < 100) {

NoahO6617

fun main() {
    val winningBid = Bid(5000, "Private Collector")

    println("Item A is sold at ${auctionPrice(winningBid, 2000)}.")
    println("Item B is sold at ${auctionPrice(null, 3000)}.")
}

class Bid(val amount: Int, val bidder: String)

fun auctionPrice(bid: Bid?, minimumPrice: Int): Int {

NoahO6617

class Person(
    val name: String,
    val age: Int,
    val hobby: String?,
    val referrer: Person?
) {
    fun showProfile() {
        println("Name: $name")
        println("Age: $age")

NoahO6617

class Song(
    val title: String,
    val artist: String,
    val year: Int,
    val playCount: Int
) {

    val isPopular: Boolean
        get() = playCount >= 1000

NoahO6617

fun main() {
val child = 5
val adult = 28
val senior = 87
val isMonday = true
println("The movie ticket price for a person aged ${child} is ${ticketPrice(child, isMonday)}.")
println("The movie ticket price for a person aged ${adult} is ${ticketPrice(adult, isMonday)}.")
println("The movie ticket price for a person aged ${senior} is ${ticketPrice(senior, isMonday)}.")
}
fun ticketPrice(age: Int, isMonday: Boolean): Int {