Kotlin Essential Training

Chapter 4 - Section 7

	fun main(args: Array<String>) {

		try {
			print("Value 1: ")
			val value1 = readLine()
			val d1 = value1!!.toDouble()

			print("Value 2: ")
			val value2 = readLine()
			val d2 = value2!!.toDouble()

			val sum = d1 + d2
			println("Answer: $sum")
		} catch (e: KotlinNullPointerException) {
			println("Value was null")
		} catch (e: NumberFormatException) {
			println("${e.message} is not a number")
		}

	}