第二次提交

C语言提高/days01/Code/01 → pedef的使用/01

@@ -0,0 +1,64 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
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+MinimumVisualStudioVersion = 10.0.40219.1
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+EndProject
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+EndProject
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+EndProject
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+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "06 堆区", "06 堆区\06 堆区.vcxproj", "{170B6EB3-9A42-4B8D-B8A7-27FD6C6FA405}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "07 static和extern区别", "07 static和extern区别\07 static和extern区别.vcxproj", "{97802D51-B18D-4EF1-8A88-58B1041ABE90}"
+EndProject
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+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Release|Win32 = Release|Win32
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{8D377781-1E7A-4638-AC15-27FE79E7DD64}.Debug|Win32.ActiveCfg = Debug|Win32
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+		{8D377781-1E7A-4638-AC15-27FE79E7DD64}.Release|Win32.Build.0 = Release|Win32
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+		{2FC9AD63-0AAF-42A3-9C32-DC1DFAFA384E}.Debug|Win32.Build.0 = Debug|Win32
+		{2FC9AD63-0AAF-42A3-9C32-DC1DFAFA384E}.Release|Win32.ActiveCfg = Release|Win32
+		{2FC9AD63-0AAF-42A3-9C32-DC1DFAFA384E}.Release|Win32.Build.0 = Release|Win32
+		{B28D4540-4C90-4696-8329-E35D33AD7C73}.Debug|Win32.ActiveCfg = Debug|Win32
+		{B28D4540-4C90-4696-8329-E35D33AD7C73}.Debug|Win32.Build.0 = Debug|Win32
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+		{B28D4540-4C90-4696-8329-E35D33AD7C73}.Release|Win32.Build.0 = Release|Win32
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+		{D62C5EF0-E780-45BE-A246-7BA6B57B3828}.Debug|Win32.Build.0 = Debug|Win32
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+		{D62C5EF0-E780-45BE-A246-7BA6B57B3828}.Release|Win32.Build.0 = Release|Win32
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+		{97802D51-B18D-4EF1-8A88-58B1041ABE90}.Release|Win32.Build.0 = Release|Win32
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+		{D9D136CF-22E3-4139-9B16-18323C8073CD}.Debug|Win32.Build.0 = Debug|Win32
+		{D9D136CF-22E3-4139-9B16-18323C8073CD}.Release|Win32.ActiveCfg = Release|Win32
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+		HideSolutionNode = FALSE
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+EndGlobal

C语言提高/days01/Code/01 → pedef的使用/01

@@ -0,0 +1,64 @@
+//#define _CRT_SECURE_NO_WARNINGS  //VS不建议使用传统库函数,如果不用这个宏，会出现一个错，编号：C4996
+#include<stdio.h>   // std 标准 i input  输入   o  output 输出 
+#include<string.h>  // strcpy   strcmp  strcat  strstr
+#include<stdlib.h>  // malloc  free
+
+
+//1、typedef使用  简化结构体关键字 struct
+//struct Person
+//{
+//	char name[64];
+//	int age;
+//};
+//typedef struct Person  myPerson;
+
+//主要用途  给类型起别名
+//语法  typedef  原名  别名
+typedef struct Person
+{
+	char name[64];
+	int age;
+}myPerson;
+
+void test01()
+{
+	struct Person p1 = { "张三", 19 };
+
+	myPerson p2 = { "李四", 20 };
+}
+
+
+// 2、区分数据类型
+void test02()
+{
+	//char * p1, p2;  //p1是char *  而 p2 是char
+
+
+	typedef char * PCHAR;
+	PCHAR p1, p2;
+
+
+	char *p3, *p4; // p3 和 p4都是char *
+}
+
+
+//3、提高代码移植性
+typedef int MYINT; //typedef long long MYINT; 只需要替换 long long 就可以了
+void test03()
+{
+	MYINT a = 10;
+
+	MYINT a2 = 10;
+}
+
+
+//程序入口
+int main1(){
+
+	
+
+
+	system("pause"); // 按任意键暂停  阻塞功能
+
+	return EXIT_SUCCESS; //返回 正常退出值  0
+}

C语言提高/days01/Code/01 → pedef的使用/01

@@ -0,0 +1,87 @@
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+    <ProjectConfiguration Include="Release|Win32">
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+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;_LIB;_CRT_SECURE_NO_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
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+    </Link>
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+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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+      <PrecompiledHeader>
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+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
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+    <ClCompile Include="test.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

C语言提高/days01/Code/01 → pedef的使用/01

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
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+    <Filter Include="头文件">
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C语言提高/days01/Code/01 → pedef的使用/01

@@ -0,0 +1,12 @@
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\debug\vc120.pdb
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\debug\vc120.idb
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\debug\01 typedef的使用.obj
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\debug\01 typedef的使用.ilk
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\debug\01 typedef的使用.exe
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\debug\01 typedef的使用.pdb
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\debug\01 typedef的使用.tlog\cl.command.1.tlog
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\debug\01 typedef的使用.tlog\cl.read.1.tlog
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\debug\01 typedef的使用.tlog\cl.write.1.tlog
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\debug\01 typedef的使用.tlog\link.command.1.tlog
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\debug\01 typedef的使用.tlog\link.read.1.tlog
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\debug\01 typedef的使用.tlog\link.write.1.tlog

C语言提高/days01/Code/01 → pedef的使用/01

@@ -0,0 +1,6 @@
+  01 typedef的使用.c
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\01 typedef的使用.c(41): warning C4101: “p4”: 未引用的局部变量
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\01 typedef的使用.c(38): warning C4101: “p2”: 未引用的局部变量
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\01 typedef的使用.c(41): warning C4101: “p3”: 未引用的局部变量
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\01 typedef的使用\01 typedef的使用.c(38): warning C4101: “p1”: 未引用的局部变量
+  01 typedef的使用.vcxproj -> E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\Debug\01 typedef的使用.exe

C语言提高/days01/Code/01 → pedef的使用/01

@@ -0,0 +1,2 @@
+#TargetFrameworkVersion=v4.0:PlatformToolSet=v120:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit
+Debug|Win32|E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\|

C语言提高/days01/Code/01 → pedef的使用/01

@@ -0,0 +1,16 @@
+#define _CRT_SECURE_NO_WARNINGS
+#include<iostream>
+using namespace std;
+
+int main(){
+
+	typedef char * PCHAR;
+	PCHAR p1, p2;
+
+	printf("p1 的类型为 %s \n", typeid(p1).name());
+
+	printf("p2 的类型为 %s \n", typeid(p2).name());
+
+	system("pause");
+	return EXIT_SUCCESS;
+}

C语言提高/days01/Code/01 → pedef的使用/02

@@ -0,0 +1,58 @@
+#define _CRT_SECURE_NO_WARNINGS
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+
+//1、无类型是不可以创建变量的
+void test01()
+{
+	//void a = 10; //编译器直接报错，因为不知道给a分配多少内存空间
+}
+
+
+//2、可以限定函数返回值
+void func()
+{
+	//return 10;
+}
+
+void test02()
+{
+	//func();
+	//printf("%d\n", func());
+}
+
+
+//3、限定函数参数列表
+int func2(void)
+{
+	return 10;
+}
+void test03()
+{
+	//printf("%d\n", func2(10));
+}
+
+
+//4、void *  万能指针
+void test04()
+{
+	void * p = NULL;
+
+	int  * pInt = NULL;
+	char * pChar = NULL;
+
+	//pChar = (char *)pInt;
+	pChar = p; //万能指针  可以不需要强制类型转换就可以给等号左边赋值
+
+	printf("size of void *   = %d\n", sizeof(p));
+
+}
+
+int main(){
+	//test02();
+	//test03();
+	test04();
+	system("pause");
+	return EXIT_SUCCESS;
+}

C语言提高/days01/Code/01 → pedef的使用/02

@@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+    <ProjectConfiguration Include="Release|Win32">
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C语言提高/days01/Code/01 → pedef的使用/02

@@ -0,0 +1,22 @@
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C语言提高/days01/Code/01 → pedef的使用/02

@@ -0,0 +1,12 @@
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\02 void的使用\debug\vc120.pdb
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\02 void的使用\debug\vc120.idb
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\02 void的使用\debug\02 void的使用.obj
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\debug\02 void的使用.ilk
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\debug\02 void的使用.exe
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\debug\02 void的使用.pdb
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\02 void的使用\debug\02 void的使用.tlog\cl.command.1.tlog
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\02 void的使用\debug\02 void的使用.tlog\cl.read.1.tlog
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\02 void的使用\debug\02 void的使用.tlog\cl.write.1.tlog
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\02 void的使用\debug\02 void的使用.tlog\link.command.1.tlog
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\02 void的使用\debug\02 void的使用.tlog\link.read.1.tlog
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\02 void的使用\debug\02 void的使用.tlog\link.write.1.tlog

C语言提高/days01/Code/01 → pedef的使用/02

@@ -0,0 +1,2 @@
+  02 void的使用.c
+  02 void的使用.vcxproj -> E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\Debug\02 void的使用.exe

C语言提高/days01/Code/01 → pedef的使用/02

@@ -0,0 +1,2 @@
+#TargetFrameworkVersion=v4.0:PlatformToolSet=v120:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit
+Debug|Win32|E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\|

C语言提高/days01/Code/01 → pedef的使用/03

@@ -0,0 +1,68 @@
+#define _CRT_SECURE_NO_WARNINGS
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+
+//1、sizeof本质， 是不是一个函数？？？ 不是函数，只是一个操作符，类似+-*/
+void test01()
+{
+	//对于数据类型 ，sizeof必须用()去使用，但是对于变量，可以不加()
+	printf("size of int = %d\n", sizeof(int));
+
+	double d = 3.14;
+
+	printf("size of d = %d\n", sizeof d );
+
+}
+
+//2、sizeof的返回值类型是什么 ？  unsigned int 无符号整型
+void test02()
+{
+	//unsigned int a = 10;
+	//if (a - 20 > 0) //当unsigned int和int类型数据做运算，编译器会将数据类型都转为unsigned int
+	//{
+	//	printf("大于 0 \n");
+	//}
+	//else
+	//{
+	//	printf("小于 0 \n");
+	//}
+
+
+	if ( sizeof(int) - 5 > 0 )
+	{
+		printf("大于 0 %u \n", sizeof(int)-5);
+	}
+	else
+	{
+		printf("小于 0 \n");
+	}
+
+}
+
+
+//3、sizeof可以统计数组长度
+//当数组名作为函数参数时候，会退化为指针，指向数组中第一个元素
+void calculateArray( int arr[] )
+{
+	printf("arr的数组长度： %d\n", sizeof(arr));
+}
+
+void test03()
+{
+	int arr[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
+
+	//printf("arr的数组长度： %d\n", sizeof(arr));
+
+	calculateArray(arr);
+}
+
+int main(){
+	//test01();
+	//test02();
+	test03();
+
+
+	system("pause");
+	return EXIT_SUCCESS;
+}

C语言提高/days01/Code/01 → pedef的使用/03

@@ -0,0 +1,86 @@
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+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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C语言提高/days01/Code/01 → pedef的使用/03

@@ -0,0 +1,22 @@
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C语言提高/days01/Code/01 → pedef的使用/03

@@ -0,0 +1,2 @@
+  03 sizeof的使用.c
+  03 sizeof的使用.vcxproj -> E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\Debug\03 sizeof的使用.exe

C语言提高/days01/Code/01 → pedef的使用/03

@@ -0,0 +1,2 @@
+#TargetFrameworkVersion=v4.0:PlatformToolSet=v120:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit
+Debug|Win32|E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\|

C语言提高/days01/Code/01 → pedef的使用/04

@@ -0,0 +1,56 @@
+#define _CRT_SECURE_NO_WARNINGS
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+
+
+void test01()
+{
+	int a = 10;
+	//直接修改
+	a = 20;
+	printf("a = %d\n", a);
+	//间接修改
+	int * p = &a;
+	*p = 100;
+
+	printf("a = %d\n", a);
+
+}
+
+//对于自定义数据类型
+struct Person
+{
+	char a; // 0 ~ 3
+	int b;  // 4 ~ 7
+	char c; // 8 ~ 11
+	int d;  // 12 ~ 15
+};
+void test02()
+{
+	struct Person p1 = { 'a', 10, 'b', 20 };
+
+	//直接修改  d 属性
+	p1.d = 1000;
+
+	//间接修改  d 属性
+	struct Person * p = &p1;
+//	p->d = 2000;
+
+	//printf("%d\n", p);
+	//printf("%d\n", p+1);
+
+	char * pPerson = p;
+
+	printf("d = %d\n", *(int*)(pPerson + 12));
+	printf("d = %d\n",  *(int*)((int*)pPerson +3) );
+}
+
+
+int main(){
+
+	//test01();
+	test02();
+	system("pause");
+	return EXIT_SUCCESS;
+}

C语言提高/days01/Code/01 → pedef的使用/04

@@ -0,0 +1,86 @@
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C语言提高/days01/Code/01 → pedef的使用/04

@@ -0,0 +1,22 @@
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C语言提高/days01/Code/01 → pedef的使用/04

@@ -0,0 +1,3 @@
+  04 变量的修改方式.c
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\04 变量的修改方式\04 变量的修改方式.c(43): warning C4133: “初始化”: 从“Person *”到“char *”的类型不兼容
+  04 变量的修改方式.vcxproj -> E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\Debug\04 变量的修改方式.exe

C语言提高/days01/Code/01 → pedef的使用/04

@@ -0,0 +1,2 @@
+#TargetFrameworkVersion=v4.0:PlatformToolSet=v120:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit
+Debug|Win32|E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\|

C语言提高/days01/Code/01 → pedef的使用/05

@@ -0,0 +1,42 @@
+#define _CRT_SECURE_NO_WARNINGS
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+
+//栈 注意事项 ，不要返回局部变量的地址
+int * func()
+{
+	int a = 10;
+	return &a;
+}
+
+void test01()
+{
+	int * p = func();
+
+	//结果已经不重要了，因为a的内存已经被释放了，我们没有权限去操作这块内存
+	printf("a = %d\n", *p);
+	printf("a = %d\n", *p);
+}
+
+
+char * getString()
+{
+	char str[] = "hello world";
+	return str;
+}
+
+void test02()
+{
+	char * p = NULL;
+	p = getString();
+	printf("%s\n", p);
+}
+
+int main(){
+
+	//test01();
+	test02();
+	system("pause");
+	return EXIT_SUCCESS;
+}

C语言提高/days01/Code/01 → pedef的使用/05

@@ -0,0 +1,86 @@
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C语言提高/days01/Code/01 → pedef的使用/05

@@ -0,0 +1,22 @@
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+  <ItemGroup>
+    <ClCompile Include="05 栈区.c">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>

C语言提高/days01/Code/01 → pedef的使用/05

@@ -0,0 +1,4 @@
+  05 栈区.c
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\05 栈区\05 栈区.c(10): warning C4172: 返回局部变量或临时变量的地址
+e:\0504\sendtostudent\day1_c\code\01 typedef的使用\05 栈区\05 栈区.c(26): warning C4172: 返回局部变量或临时变量的地址
+  05 栈区.vcxproj -> E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\Debug\05 栈区.exe

C语言提高/days01/Code/01 → pedef的使用/05

@@ -0,0 +1,2 @@
+#TargetFrameworkVersion=v4.0:PlatformToolSet=v120:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit
+Debug|Win32|E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\|

C语言提高/days01/Code/01 → pedef的使用/06

@@ -0,0 +1,92 @@
+#define _CRT_SECURE_NO_WARNINGS
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+
+int * getSpace()
+{
+	int * p = malloc(sizeof(int)* 5);
+
+	if (p == NULL)
+	{
+		return NULL;
+	}
+
+	for (int i = 0; i < 5;i++)
+	{
+		p[i] = i + 100;
+	}
+	return p;
+
+}
+
+void test01()
+{
+	int * p = getSpace();
+
+	for (int i = 0; i < 5;i++)
+	{
+		printf("%d\n", p[i]);
+	}
+
+	//手动在堆区创建的数据，记得手动释放
+	free(p);
+	p = NULL;
+
+}
+
+
+//注意事项
+//如果主调函数中没有给指针分配内存，被调函数用同级指针是修饰不到主调函数中的指针的
+void allocateSpace( char * pp )
+{
+	char * temp =  malloc(100);
+	if (temp == NULL)
+	{
+		return;
+	}
+	memset(temp, 0, 100);
+	strcpy(temp, "hello world");
+	pp = temp;
+
+}
+
+void test02()
+{
+	char * p = NULL;
+	allocateSpace(p);
+
+	printf("%s\n", p);
+}
+
+
+void allocateSpace2(char ** pp)
+{
+	char * temp = malloc(100);
+	memset(temp, 0, 100);
+	strcpy(temp, "hello world");
+	*pp = temp;
+}
+
+void test03()
+{
+	char * p = NULL;
+
+	allocateSpace2(&p);
+
+	printf("%s\n", p);
+
+	free(p);
+	p = NULL;
+
+}
+
+
+
+int main(){
+	//test01();
+	//test02();
+	test03();
+	system("pause");
+	return EXIT_SUCCESS;
+}

C语言提高/days01/Code/01 → pedef的使用/06

@@ -0,0 +1,86 @@
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+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{170B6EB3-9A42-4B8D-B8A7-27FD6C6FA405}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>My06堆区</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

C语言提高/days01/Code/01 → pedef的使用/06

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
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+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
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C语言提高/days01/Code/01 → pedef的使用/06

@@ -0,0 +1,2 @@
+  06 堆区.c
+  06 堆区.vcxproj -> E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\Debug\06 堆区.exe

C语言提高/days01/Code/01 → pedef的使用/06

@@ -0,0 +1,2 @@
+#TargetFrameworkVersion=v4.0:PlatformToolSet=v120:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit
+Debug|Win32|E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\|

C语言提高/days01/Code/01 → pedef的使用/07

@@ -0,0 +1,35 @@
+#define _CRT_SECURE_NO_WARNINGS
+#include<stdio.h>
+#include<string.h>
+#include<stdlib.h>
+
+//1、静态变量
+static int a = 10; //特点：只初始化一次，在编译阶段就分配内存，属于内部链接属性，只能在当前文件中使用
+
+void test01()
+{
+	static int b = 20; //局部静态变量,作用域只能在当前test01中
+
+	//a 和 b的生命周期是一样的
+}
+
+
+//2、全局变量
+
+extern int g_a = 100; //在C语言下 全局变量前都隐藏加了关键字  extern，属于外部链接属性
+
+void test02()
+{
+	extern int g_b;//告诉编译器 g_b是外部链接属性变量，下面在使用这个变量时候不要报错
+
+	printf("g_b = %d\n", g_b);
+
+}
+
+int main(){
+	test02();
+	
+
+	system("pause");
+	return EXIT_SUCCESS;
+}

C语言提高/days01/Code/01 → pedef的使用/07

@@ -0,0 +1,87 @@
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+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
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+    <CharacterSet>Unicode</CharacterSet>
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+  <ImportGroup Label="ExtensionSettings">
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
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+    <ClCompile Include="07 static和extern区别.c" />
+    <ClCompile Include="test.c" />
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

C语言提高/days01/Code/01 → pedef的使用/07

@@ -0,0 +1,25 @@
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+    <Filter Include="资源文件">
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+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
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C语言提高/days01/Code/01 → pedef的使用/07

@@ -0,0 +1,2 @@
+#TargetFrameworkVersion=v4.0:PlatformToolSet=v120:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit
+Debug|Win32|E:\0504\sendToStudent\Day1_C\Code\01 typedef的使用\|