From 9b022ed91e1ae5ac9c49151d7db93076aa2424d7 Mon Sep 17 00:00:00 2001
From: xuxin <840198532@qq.com>
Date: Wed, 24 Dec 2025 15:42:39 +0800
Subject: [PATCH] =?UTF-8?q?day03-.for=E5=BE=AA=E7=8E=AF=E7=9A=84=E8=AF=AD?=
 =?UTF-8?q?=E6=B3=95&=E7=BB=83=E4=B9=A0?=
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---
 day03/src/com/inmind/Demo03_for.java | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/day03/src/com/inmind/Demo03_for.java b/day03/src/com/inmind/Demo03_for.java
index 7e81d70..191cbaa 100644
--- a/day03/src/com/inmind/Demo03_for.java
+++ b/day03/src/com/inmind/Demo03_for.java
@@ -14,6 +14,20 @@ for(循环变量初始化①;循环条件②;修改循环变量④){
 public class Demo03_for {
     public static void main(String[] args) {
         //for循环练习：使用循环，计算1-100之间的偶数和
+        /*
+        1.定义个变量用来保存总和的结果
+        2.for循环1~100，判断出所有偶数
+        3.将每个偶数相加得到结果打印
+         */
+        int sum = 0;
+        for (int i = 1; i <= 100; i++) {
+            if (i % 2 == 0) {
+                //当前i一定是偶数
+//                sum = sum+i;
+                sum+= i;
+            }
+        }
+        System.out.println("1-100之间的偶数和:"+sum);
     }