Kotlin 학습하기 참고 링크 : Hello world | Kotlin Documentation (kotlinlang.org) fun main() { if (true){ println("Hello!\\n") } println("Mobile Software") // Hello, world! } In Kotlin: fun is used to declare a function the main() function is where your program starts from the body of a function is written within curly braces {} [println()]() and [print()]() functions print their arguments to standard out..