//: Playground - noun: a place where people can play import UIKit //1.函数的定义 // func 函数名(参数1名:参数类型, 参数2名:参数类型)-> 返回值类型{ //函数体内容 //} func tenTimes(times : Int) -> Int { return times * 10 } //2.函数的调用 var parameters = tenTimes(2) for i in 0...9 { parameters = tenTimes(i) } //3.多重参数函数 func bulidASentence(name : String, age : Int, weight : Int) -> String { let sentence = "(name) is (age) year's old and (weight)kg." return sentence } //一个函数有多个参数时,第一个参数可以省略参数,从第二个参数起不能省略 bulidASentence("孙悟空", age: 50000, weight: 100) //4.无参数时,括号不能省略 func sayHello() -> String { return "hello" } func sayHello2(_ : Void) -> String { return "hello" } sayHello() //5.无返回值 func sayByebye(name : String) -> () { print("ByeBye! (name)") } sayByebye("Tom") func sayByebye2(name : String) { print("ByeBye! (name)") }
swift函数_10_swift中函数基本使用
时光见证了成长,还很无知,我想一点点幼稚转为有知!