Swift教程之循环语句
发布时间:2020-12-14 02:02:12 所属栏目:百科 来源:网络整理
导读:import Foundation//MARK:-----for循环//for-infor index in 1...5{ print("(index) * 5 = (index*5) ")}//求3的10次幂//如果不需要知道区间内每一项的值,你可以使用下划线(_)var answer = 1for _ in 1...10{ answer *= 3}print("3的10次幂是(answer)"
import Foundation //MARK:-----for循环 //for-in for index in 1...5 { print("(index) * 5 = (index*5) ") } //求3的10次幂 //如果不需要知道区间内每一项的值,你可以使用下划线(_) var answer = 1 for _ in 1...10 { answer *= 3 } print("3的10次幂是(answer)") //for-in 遍历数组 let names = ["小米","苹果"] for name in names { print("Hello,(name)!") } //for-in 遍历字典 let dic = ["地址":"北京","age":20] for (key,value) in dic { print("(key)是(value)") } //for条件递增(for-condition-increment) for var i = 0; i < 3; ++i { print("i is (i)") } //MARK:----while循环和do-while循环 //while循环 var va = 1 while va < 5 { print("while index is (va)") va++ } //do-while循环 var vb = 1 repeat { print("do while index is (vb)") vb++ } while vb < 5 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |