swift 函数返回值

func introduce(name: String,age: Int) -> String
{
return "\(name),I'm \(age) year  old now."
}
introduce("Zing",18)

func helloWorld()
{
return "hello world"
}
print(helloWorld())

func operation(pending: Int...) ->(add: Int,ride: Int)
{
var ad = 0,ri = 1
for a in add
{
ad+=a
}
for r in ride
{
ri*=r
}
return (ad,ri)
}
let result = operation(5,10,10)
print("加\(result.add)，乘\(result.ride)")