Head First Kotlin程序设计

你现在的位置 4 87

functions

函数

向

Game.kt

中添加

printResult

函数

我们需要向

Game.kt

中添加printResult函数，并且在main函数中调

用它。请按照下面的代码更新你的版本（更新的代码以粗体表示）：

fun main(args: Array<String>) {

val options = arrayOf("Rock", "Paper", "Scissors")

val gameChoice = getGameChoice(options)

val userChoice = getUserChoice(options)

printResult(userChoice, gameChoice)

}

fun getGameChoice(optionsParam: Array<String>) =

optionsParam[(Math.random() * optionsParam.size).toInt()]

fun getUserChoice(optionsParam: Array<String>): String {

var isValidChoice = false

var userChoice = ""

//Loop until the user enters a valid choice

while (!isValidChoice) {

//Ask the user for their choice

print("Please enter one ...