Swift 中 for 循环

//定义文具信息为元组类型
let Name = (铅笔:200,橡皮:100,录音笔:20.5,"书包","书本")
//铅笔数量为整数类型

var pension:Int = 200

//定义橡皮数量为整数类型

var rubber:Int = 100

//定义录音笔价格为浮点数量

var pen:Double = 20.5

//定义书包数量为整数类型

var bag:Int = 50

//定义书本数量为整数类型

var book:Int = 100

//使用for循环打印元组的内容循环5次以上

for i in 1...6 {
print(Name)
}

var shopingName:String = "铅笔"

//编写switch控制语句，判断当case  shopingName  == “铅笔” 时打印“num=100”
switch shopingName {
case "铅笔":
print("num=100")
break

default:
print("100")
break
}

shopingName = "橡皮"
//（1）   编写if shopingName == “橡皮” 时，打印“num = 200”

if shopingName == "橡皮" {
print("num = 200")
}
//编写if shopingName == “ 录音笔” 时，打印“pice = 125.5”  else 打印“pice = 128.5”
if shopingName == "录音笔" {
print("pice=125.5")
}else{
print("pice= 128.5")
}

//元组转换成字符串

var string = Name

//将字符串打印

print(string)