2주차 선언 함수 매개변수가 없을떄

.editorconfig

@@ -0,0 +1,2 @@
+[*.c]
+charset = utf-8

.gitignore

@@ -0,0 +1,2 @@
+*/*
+Computer-Programming-and-Practice-2025-1.vcxproj.user

Project-Function-Calls-No-Parameter.vcxproj.user

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup />
+</Project>

Project-Function-Declarations-No-Parameter.vcxproj

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>17.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{56298b6a-7bcc-4ad5-857c-3ae51b8ca9fa}</ProjectGuid>
+    <RootNamespace>ProjectFunctionDeclarationsNoParameter</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <AdditionalOptions>/utf-8 %(AdditionalOptions)</AdditionalOptions>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="main.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

Project-Function-Declarations-No-Parameter.vcxproj.filters

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="c 소스 파일">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>c</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.c">
+      <Filter>c 소스 파일</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>

Project-Function-Declarations-No-Parameter.vcxproj.user

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup />
+</Project>

README.md

@@ -1,2 +1,22 @@
-# Computer Programming and Practice 2025-1
- 컴퓨터 프로그래밍 및 실습 과목의 수업 홈페이지
+# 함수선언 (매개변수가 없을 때)
+
+함수 선언은 함수 정의, 전역변수 선언과 더불어 전처리 후의 C 프로그램을 구성합니다. 
+함수 선언은 이름이 특정 반환타입의 함수를 가리킨다고 정합니다. 
+
+`타입` `이름` `(` `)` `;` 형태로 씁니다.
+
+#### 코드 예시:
+```c
+/* 반환 타입이 void고, 이름이 x인 함수의 선언 */
+void x();
+```
+
+#### 관련 C89 표준
+3.5.4.3 Function declarators (including prototypes)
+> Semantics
+>
+> If, in the declaration "T D1", D1 has the form
+>
+> D( ... )
+>
+> ... then the type specified for ident is " ... function returning T." 

Solution-Week2.sln

@@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.13.35818.85 d17.13
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Project-Function-Declarations-No-Parameter", "Project-Function-Declarations-No-Parameter.vcxproj", "{56298B6A-7BCC-4AD5-857C-3AE51B8CA9FA}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{56298B6A-7BCC-4AD5-857C-3AE51B8CA9FA}.Debug|x64.ActiveCfg = Debug|x64
+		{56298B6A-7BCC-4AD5-857C-3AE51B8CA9FA}.Debug|x64.Build.0 = Debug|x64
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {7548D284-3031-4A53-8359-876BE48586E0}
+	EndGlobalSection
+EndGlobal

main.c

@@ -0,0 +1,23 @@
+/* 매개변수가 없는 함수의 선언 */
+
+/* 문법
+ * 매개변수가 없는 함수는 타입 이름 ( ) ; 형식으로 선언합니다. 
+ *
+ * 의미
+ * 해당 이름이 특정 반환타입의 함수를 뜻한다고 정합니다. 
+ */
+
+/* To Do: 반환 타입이 int이고 이름이 five인 함수를 선언해보세요 */
+
+int main() {
+	return five();
+}
+
+/* 
+ * 함수 이름: five
+ * 반환 타입: int
+ * five()는 5를 결과값으로 반환한다.
+ */
+int five() {
+	return 5;
+}