Swift教程之运算符

50 : 20)

//7、范围运算符

//封闭范围运算符（包含a和b）

for index in 1...5 {

print("\(index) times 5 is \(index * 5)")

}

//半封闭的区域运算符（包头不包尾）

let names = ["Anna", "Alex", "Brian", "Jack"]

let count = names.count

for i in 0..<count

{

print("Person \(i) is called \(names[i])")