// TestWhenExpression.kt(テストwhen式)
fun main(){
    val x: Int = 18

    when(x) {
        in 1..5 -> println("1~5")
        in 6..10 -> println("6~10")
        in 11..15 -> println("11~15")
        in 16..20 -> println("16~20")
        else -> println("else")
    }
}
// 16~20