While循环详解 

 1 package com.pingfan.struct;
 2 
 3 public class WhileDemo1 {
 4     public static void main(String[] args) {
 5         //输出100
 6 
 7         int i = 0;
 8         while (i<100){
 9             i++;
10             System.out.println(i);
11         }
12     }
13 }
 1 package com.pingfan.struct;
 2 
 3 public class WhileDemo2 {
 4     public static void main(String[] args) {
 5         //计算1+2+3+...+100=?
 6         int i = 0;
 7         int sum = 0;
 8 
 9         while (i<=100){
10             sum = sum + i;
11             i++;
12         }
13         System.out.println(sum);
14     }
15 }

 

posted @ 2021-03-22 22:04  HeartlessHero  阅读(31)  评论(0)    收藏  举报