From 1e60c691dbcde76000737ebf543d2195f47efe89 Mon Sep 17 00:00:00 2001
From: wsb <1234@qq.com>
Date: Sun, 9 Apr 2023 19:36:37 +0800
Subject: [PATCH] =?UTF-8?q?=E5=88=86=E6=95=A3=E7=9A=84=E5=91=BD=E5=90=8D?=
 =?UTF-8?q?=E7=A9=BA=E9=97=B4=E4=BD=BF=E7=94=A8=E6=BC=94=E7=A4=BA=EF=BC=81?=
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---
 CMakeLists.txt     |  2 +-
 main.cpp           |  6 ++++++
 nameSpaceDemo2.cpp |  9 +++++++++
 nameSpaceDemo2.h   | 21 +++++++++++++++++++++
 4 files changed, 37 insertions(+), 1 deletion(-)
 create mode 100644 nameSpaceDemo2.cpp
 create mode 100644 nameSpaceDemo2.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6c7b7a1..4fd7968 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,4 +3,4 @@ project(cpp_16_MemoryAndNamespace)
 
 set(CMAKE_CXX_STANDARD 11)
 
-add_executable(cpp_16_MemoryAndNamespace main.cpp Student.cpp Student.h nameSpaceDemo.cpp nameSpaceDemo.h)
+add_executable(cpp_16_MemoryAndNamespace main.cpp Student.cpp Student.h nameSpaceDemo.cpp nameSpaceDemo.h nameSpaceDemo2.cpp nameSpaceDemo2.h)
diff --git a/main.cpp b/main.cpp
index bd988ec..c7e959f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,6 +1,7 @@
 #include <iostream>
 #include "Student.h"
 #include "nameSpaceDemo.h"
+#include "nameSpaceDemo2.h"
 
 using namespace std;
 
@@ -46,6 +47,11 @@ int main() {
     MySpace::MP::print();
 
 
+    //使用分散的命名空间： 先定义命名空间，然后后续再在原有的命名空间增加元素，nameSpaceDemo2为在MySpace后续增加的元素。
+    MySpace::nameSpaceDemo2 demo2;
+    demo2.print();
+
+
     std::cout << "Hello, World!" << std::endl;
     return 0;
 }
diff --git a/nameSpaceDemo2.cpp b/nameSpaceDemo2.cpp
new file mode 100644
index 0000000..a856e84
--- /dev/null
+++ b/nameSpaceDemo2.cpp
@@ -0,0 +1,9 @@
+//
+// Created by 11010 on 2023/4/9.
+//
+
+#include "nameSpaceDemo2.h"
+
+void MySpace::nameSpaceDemo2::print() {
+    cout<<"MySpace::nameSpaceDemo2::print()"<<endl;
+}
diff --git a/nameSpaceDemo2.h b/nameSpaceDemo2.h
new file mode 100644
index 0000000..026209a
--- /dev/null
+++ b/nameSpaceDemo2.h
@@ -0,0 +1,21 @@
+//
+// Created by 11010 on 2023/4/9.
+//
+
+#ifndef CPP_16_MEMORYANDNAMESPACE_NAMESPACEDEMO2_H
+#define CPP_16_MEMORYANDNAMESPACE_NAMESPACEDEMO2_H
+
+#include "iostream"
+
+//使用using namespace 命名空间名称： 指定当前需要使用std命名空间，这样在使用时就不需要加std::前缀了。
+using namespace std;
+
+//使用已定义的MySpace，为已有的MySpace增加元素
+namespace MySpace {
+    class nameSpaceDemo2 {
+    public:
+        void print();
+    };
+
+}
+#endif //CPP_16_MEMORYANDNAMESPACE_NAMESPACEDEMO2_H
-- 
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