첫 Kotlin 프로그램: main, println 및 입력

fun main() {
    // your code here
}

fun main() {
    println("Hello, World!")
}

fun main() {
    print("Hello, ")
    print("Kotlin")
    println("!") // newline after
    println("Next line")
}

fun main() {
    val name = "Alice"
    val age = 30
    println("Name: $name, Age: $age")
}

fun main() {
    val city = "Istanbul"
    val temp = 22
    println("Weather in " + city + ": " + temp + "C")
}

fun main() {
    println("Enter your name:")
    val name = readLine() ?: "Stranger"
    println("Hello, $name!")
}

fun main() {
    println("Type something:")
    val line = readln()
    println("You typed: $line")
}

fun main() {
    println("Enter your age:")
    val ageInput = readln()
    val age = ageInput.toIntOrNull() ?: 0
    println("Next year you will be ${age + 1}")
}

fun main() {
    println("First name:")
    val first = readln()
    println("Last name:")
    val last = readln()
    println("Full name: $first $last")
}

fun main() {
    val price = 19.99
    val quantity = 3
    println("Total: ${price * quantity}")
    println("Items: ${quantity}x")
}

fun main(args: Array<String>) {
    if (args.isEmpty()) {
        println("No args passed")
    } else {
        println("First arg: ${args[0]}")
    }
}