Swift - 38 - 枚举的基本语法

//: Playground - noun: a place where people can play

import UIKit

// 创建一个枚举类型就相当于创建了一个新的数据类型, 所以首字母应该大写
enum GameEnding
{
    case win
    case lose
    case draw
}

var yourScore = 100
var enemyScore = 90

// 初始化枚举变量
// var theGameEnding = GameEnding.win
var theGameEnding:GameEnding = .win
if yourScore > enemyScore {
    theGameEnding = GameEnding.win
} else if yourScore == enemyScore {
    theGameEnding = .draw       // swift会自动识别到theGameEnding的枚举类型, 所以这里可以省略GameEnding
} else if yourScore < enemyScore {
    theGameEnding = .lose
}

switch theGameEnding
{
case .win:
    print("u win")
case .lose:
    print("u lose")
case .draw:
    print("draw")
}