swift -控制语句

//
//  main.swift
//  控制语句-03
//


import Foundation

println("Hello,World!")
//定义一个分数
var score = 80;
/**
*  定义一个数组
*/
var scoreArr = [90,99,45,89,67,54];

var minscore = 0;
var maxscore = 0;
var avgscore = 0.0;
var sumscore = 0.0;
var count = scoreArr.count;

//循环所有的yuans

for s in scoreArr
{
    sumscore = sumscore + Double(s);
    println("s is \(s)");
    if(minscore == 0||minscore > s){
        minscore = s;
    }
    if(maxscore == 0||maxscore < s)
    {
        maxscore = s;
    }
}
avgscore = sumscore/Double(count);
println("sumSocre is \(sumscore) avgscore is \(avgscore)");
println("maxscore is \(maxscore) minscore is \(minscore)");

for(var i = 0; i < count; i++){
    var s = scoreArr[i];//取得第iyuans
    println("for ...i\(i) s = \(s)");
    if(minscore == 0||minscore > s){
        minscore = s;
    }
    if(maxscore == 0||maxscore < s)
    {
        maxscore = s;
    }
}
avgscore = sumscore/Double(count);
println("sumSocre is \(sumscore) avgscore is \(avgscore)");
println("maxscore is \(maxscore) minscore is \(minscore)");


var index = 0;
do{
    if(index >= count){
        break;
    }
    var s = scoreArr[index];
    println("do-while s[\(index)]=\(s)");
}while(++index < count);


index = 0;
while(index < count)
{
    index++;
    if(index >= count){
        break;
    }
    var s = scoreArr[index];
    println("while s[\(index)] = \(s)");
}


//switch 之前的switch会穿透
let appType = "ios";
switch appType
{
    case "ios":
        println("ios开发");
        fallthrough;//让往下走
    case "Android":
        println("Android开发");
    case "Java":
        println("Java 开发");
default:
        println("没有任何匹配");
}