Scala编程创建一个Box类，在其中定义三个变量表示一个立方体的长、宽和高，长宽高可以通过控制台输入

class Box(var length: Double, var width: Double, var height: Double) {

def this() {
this(0,0,0)
}

def this(length: Double, width: Double) {
this(length, width, 0)
}

def this(length: Double) {
this(length, 0, 0)
}

def volume(): Double = {
length * width * height
}

}

object Box {

def main(args: Array[String]): Unit = {
val length = scala.io.StdIn.readDouble()
val width = scala.io.StdIn.readDouble()
val height = scala.io.StdIn.readDouble()
val box = new Box(length, width, height)
println(s"Length: ${box.length}")
println(s"Width: ${box.width}")
println(s"Height: ${box.height}")
println(s"Volume: ${box.volume()}")
}

}