diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 918de97..c0ea527 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -59,11 +59,11 @@
               "type": "webviewer",
               "state": {
                 "url": "https://share.note.youdao.com/ynoteshare/index.html?id=a66c778ce8c6e4ee03608e493e59ba7a&type=notebook&_time=1768473840238#/WEB4f51ebc698a96e5cc1a682b2fb7b683d",
-                "title": "02C语言",
+                "title": "CQ2605",
                 "mode": "webview"
               },
               "icon": "globe-2",
-              "title": "02C语言"
+              "title": "CQ2605"
             }
           },
           {
@@ -81,7 +81,7 @@
             }
           }
         ],
-        "currentTab": 1
+        "currentTab": 4
       }
     ],
     "direction": "vertical"
@@ -148,13 +148,12 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "Collection/连~都忘记了的小知识.md",
                 "followCursor": true,
                 "showSearch": false,
                 "searchQuery": ""
               },
               "icon": "lucide-list",
-              "title": "连~都忘记了的小知识 的大纲"
+              "title": "大纲"
             }
           },
           {
@@ -306,8 +305,11 @@
       "remotely-save:Remotely Save": false
     }
   },
-  "active": "d83368a00da306d8",
+  "active": "42e7165f72a639db",
   "lastOpenFiles": [
+    "YueQian/Homework/~$运算符1.docx",
+    "YueQian/Homework/运算符测试.docx",
+    "YueQian/Homework/运算符1.docx",
     "YueQian/相关网站.md",
     "Collection/连~都忘记了的小知识.md",
     "Collection/Obsidian使用飞牛Webdav实现多端同步.md",
@@ -345,7 +347,6 @@
     "Article/Technology/飞牛搭配mtphotos使用passnet内网穿透服务优雅快速的分享照片访问.md",
     "Article/Technology/NFC_Card.md",
     "Article/Technology/MarkdownTest.md",
-    "Article/Technology/在ARM架构的Ubuntu中使用Docker Compose部署MTPhotos.md",
     "Article/Studyroad/vivado_ip_img",
     "Article/Technology",
     "Article/Studyroad",
@@ -353,8 +354,6 @@
     "Article",
     "Page",
     "Collection/YoudaoyunNotes/02C语言/attachments/WEBRESOURCE40a76a7d230733292ec04717f3f6f254编程规范.pdf",
-    "Collection/YoudaoyunNotes/02C语言/attachments/WEBRESOURCEf8f411dd54c53da227a89fc7031bb0c7terminal_colors.h",
-    "Collection/YoudaoyunNotes/02C语言/attachments/WEBRESOURCEd71090e9d6659f19f9b36c93099793f4指针与数组作业.doc",
     "YueQian/Homework/未命名.canvas",
     "Excalidraw/未命名.canvas",
     "未命名.canvas"
diff --git a/Collection/连~都忘记了的小知识.md b/Collection/连~都忘记了的小知识.md
index abece47..0a13be8 100644
--- a/Collection/连~都忘记了的小知识.md
+++ b/Collection/连~都忘记了的小知识.md
@@ -27,4 +27,17 @@ mv mount_hgfs /bin #移动到/bin路径下 以后使用 mount_hgfs 直接执行
 - 按位异或`^，a ^ b = c , a ^ c = b , b ^ c = a;`,可用于进行数的交换（省去中间值）
 - C语言左移`<<`就是与2的x次方相乘，右移为相除
 - 简便运算后有括号`a *= 5+8 ==> a = a * (5 + 8)`，赋值运算符的优先级很低
-- 
\ No newline at end of file
+- C语言中`  ... `表示范围赋值
+```c
+int arr[10] = {[0 ...3] = 24, [6 ...9] = 12};
+//or
+switch (num)
+{
+	case 90 ...100:
+		printf("LEVEL: A \n");
+		break;
+	default:
+		printf("What are you doing baby ? \n");
+		break;
+}
+```
\ No newline at end of file
diff --git a/YueQian/Homework/运算符1.docx b/YueQian/Homework/运算符1.docx
new file mode 100644
index 0000000..8b447f6
Binary files /dev/null and b/YueQian/Homework/运算符1.docx differ
diff --git a/YueQian/Homework/运算符测试.docx b/YueQian/Homework/运算符测试.docx
new file mode 100644
index 0000000..98326fa
Binary files /dev/null and b/YueQian/Homework/运算符测试.docx differ