swift的控制语句

1 for循环语句的例子

//定义一个分数
var score=80;

//定义一个数组
var scores=[90,98];

var minScord=0;

var maxScore=0;

var avgScore=0.0;

var count=scores.count;

var sumScore=0.0;

//循环数组中所有数据

for s inscores
{

sumScore=sumScore+Double(s)

println("s is
\(s)");
}

println("sumScore is\(sumScore)")
2 do while 循环语句例子

var index=0;

do{

var s=scores[index]

index++
println(s)

}while(index<count)

3 while 循环语句

while (index<count)
{

var ss=scores[index]

println("while s\(ss)")
}

//switch切换语句

let appType =
"IOS"

switch appType {

case
"IOS":

println("IOS开发");

fallthrough;//不让往下走

case
"ANdroid":

println("Android开发")

case
"windowPhhone":

println("WIndow Phone")

default:

break;

};
1 for循环语句的例子

//定义一个分数

var score=80;

//定义一个数组

var scores=[90,98];

var minScord=0;

var maxScore=0;

var avgScore=0.0;

var count=scores.count;

var sum