Class definition

class_dog.kt

fun main() {
    val dog = Dog()
    dog.bark()
}

// class is a user defined data type
class Dog {

    // characteristics/properties of a class
    val legs: Int = 4
    val color: String = "Black"


    // member functions

    // behavior of a class
    fun run() {
        // this keyword is a reference to the class or object that this function belongs
        this.bark() // bark while running
    }

    fun bark() {
    }

    fun sleep() {

    }
}