[IOS] Swift3 Function정의

import UIKit

//** Functions

//** Funtion 定義

func CheckCount () {

    var count: Int = 0

    

    while count < 10 {

        print(count)

        count += 1

    }

}

CheckCount()

//** Function Parameter 定義

func CheckCount (message: String) {

    var count: Int = 0

    

    while count < 10 {

        print(message)

        count += 1

    }

}

CheckCount(message: "not yet")

//** Parameter値を指定

func CheckCount (message: String, pCount: Int) {

    var count: Int = pCount

    

    while count < 10 {

        print(message)

        count += 1

    }

}

CheckCount(message: "not yet2", pCount: 5)

//** Func Return

func CheckCount2 (message: String, pCount: Int) -> String {

    var count: Int = pCount

    

    while count < 10 {

        print(message)

        count += 1

    }

    

    return "Done!"

}

print(CheckCount2(message: "Do yet", pCount: 3))