when expression in fun main

fun main() {
    var nilai: Int = 65
    var grade: String = "null"

    when(nilai){
        in 90..100 -> grade = "Sangat Memuaskan"
        in 80..89 -> grade = "Memuaskan"
        in 70..79 -> grade = "Lumayan"
        else ->grade = "kurang/kelebihan"
    }
    println("nilai anda: $grade" )
}