Default Parameters

fun favoriteLanguage(name, language = "Kotlin") {
  println("Hello, $name. Your favorite programming language is $language")  
}
fun main() {
  favoriteLanguage("Manon") 
  //Prints: Hello, Manon. Your favorite programming language is Kotlin

  favoriteLanguage("Lee", "Java") 
  //Prints: Hello, Lee. Your favorite programming language is Java
}