if for //: object/ForEachFloat.java package object; import java.util.Random; public class ForEachFloat { public static void main(String[] args) { Random rand = new Random();//47是随机种子,如果不提供种子,默认为系统时间 float f[] = new float[10]; for(int i = 0; i < 10; i
break 终止循环, continue 跳出本次循环,进入下一次循环 username = 'Loker'passwd = '123456' for i in range(3): user = input('请输入您的用户名:') password = input('请输入您的密码:') if user == username and password == passwd: print('welcome,%s'%user) break else: print('sorry.your usern