diff --git a/exercise/01/app/app.cpp b/exercise/01/app/app.cpp
new file mode 100644
index 0000000..1848c12
Binary files /dev/null and b/exercise/01/app/app.cpp differ
diff --git a/exercise/01/app/app.vcxproj b/exercise/01/app/app.vcxproj
new file mode 100644
index 0000000..182e18e
--- /dev/null
+++ b/exercise/01/app/app.vcxproj
@@ -0,0 +1,202 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>15.0</VCProjectVersion>
+    <ProjectGuid>{843D77A9-6E04-4515-91D5-A010A5CDF8E0}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>app</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0.17134.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <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" />
+  </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>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>static_library.lib;dynamic_library_with_implib.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>..\lib\$(Platform)\$(Configuration);..\dll2\$(Platform)\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+    </Link>
+    <PostBuildEvent>
+      <Command>copy /Y "..\dll1\$(Platform)\$(Configuration)\dynamic_library.dll" "$(SolutionDir)\$(Platform)\$(Configuration)\"
+copy /Y "..\dll2\$(Platform)\$(Configuration)\dynamic_library_with_implib.dll" "$(SolutionDir)\$(Platform)\$(Configuration)\"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>static_library.lib;dynamic_library_with_implib.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories);..\lib\$(Platform)\$(Configuration);..\dll2\$(Platform)\$(Configuration)</AdditionalLibraryDirectories>
+    </Link>
+    <PreLinkEvent>
+      <Command>
+      </Command>
+    </PreLinkEvent>
+    <PostBuildEvent>
+      <Command>copy /Y "..\dll1\$(Platform)\$(Configuration)\dynamic_library.dll" "$(SolutionDir)\$(Configuration)\"
+copy /Y "..\dll2\$(Platform)\$(Configuration)\dynamic_library_with_implib.dll" "$(SolutionDir)\$(Configuration)\"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>static_library.lib;dynamic_library_with_implib.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>%(AdditionalLibraryDirectories);..\lib\$(Platform)\$(Configuration);..\dll2\$(Platform)\$(Configuration)</AdditionalLibraryDirectories>
+    </Link>
+    <PreLinkEvent>
+      <Command>
+      </Command>
+    </PreLinkEvent>
+    <PostBuildEvent>
+      <Command>copy /Y "..\dll1\$(Platform)\$(Configuration)\dynamic_library.dll" "$(SolutionDir)\$(Configuration)\"
+copy /Y "..\dll2\$(Platform)\$(Configuration)\dynamic_library_with_implib.dll" "$(SolutionDir)\$(Configuration)\"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+      <PrecompiledHeaderFile>pch.h</PrecompiledHeaderFile>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>static_library.lib;dynamic_library_with_implib.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>..\lib\$(Platform)\$(Configuration);..\dll2\$(Platform)\$(Configuration);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+    </Link>
+    <PostBuildEvent>
+      <Command>copy /Y "..\dll1\$(Platform)\$(Configuration)\dynamic_library.dll" "$(SolutionDir)\$(Platform)\$(Configuration)\"
+copy /Y "..\dll2\$(Platform)\$(Configuration)\dynamic_library_with_implib.dll" "$(SolutionDir)\$(Platform)\$(Configuration)\"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="app.cpp" />
+    <ClCompile Include="pch.cpp">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Create</PrecompiledHeader>
+    </ClCompile>
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/exercise/01/app/app.vcxproj.filters b/exercise/01/app/app.vcxproj.filters
new file mode 100644
index 0000000..cffaa85
--- /dev/null
+++ b/exercise/01/app/app.vcxproj.filters
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;ipp;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="pch.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="app.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/exercise/01/app/pch.cpp b/exercise/01/app/pch.cpp
new file mode 100644
index 0000000..a38f8a3
Binary files /dev/null and b/exercise/01/app/pch.cpp differ
diff --git a/exercise/01/app/pch.h b/exercise/01/app/pch.h
new file mode 100644
index 0000000..d87432d
Binary files /dev/null and b/exercise/01/app/pch.h differ
diff --git a/exercise/01/e01.sln b/exercise/01/e01.sln
index fb6ce37..2b9cd47 100644
--- a/exercise/01/e01.sln
+++ b/exercise/01/e01.sln
@@ -1,66 +1,120 @@
-
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.28010.2036
-MinimumVisualStudioVersion = 10.0.40219.1
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "static_library", "lib\static_library.vcxproj", "{990D865F-0DF2-40ED-8622-8DD0DB4A2128}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "app", "app\app.vcxproj", "{843D77A9-6E04-4515-91D5-A010A5CDF8E0}"
-	ProjectSection(ProjectDependencies) = postProject
-		{92DBD108-3D52-419D-BC33-217327A4AD9D} = {92DBD108-3D52-419D-BC33-217327A4AD9D}
-		{990D865F-0DF2-40ED-8622-8DD0DB4A2128} = {990D865F-0DF2-40ED-8622-8DD0DB4A2128}
-		{4EA09877-C87B-489E-9F80-A921D8E66E46} = {4EA09877-C87B-489E-9F80-A921D8E66E46}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dynamic_library", "dll1\dynamic_library.vcxproj", "{92DBD108-3D52-419D-BC33-217327A4AD9D}"
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dynamic_library_with_implib", "dll2\dynamic_library_with_implib.vcxproj", "{4EA09877-C87B-489E-9F80-A921D8E66E46}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug|x64 = Debug|x64
-		Debug|x86 = Debug|x86
-		Release|x64 = Release|x64
-		Release|x86 = Release|x86
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Debug|x64.ActiveCfg = Debug|x64
-		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Debug|x64.Build.0 = Debug|x64
-		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Debug|x86.ActiveCfg = Debug|Win32
-		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Debug|x86.Build.0 = Debug|Win32
-		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Release|x64.ActiveCfg = Release|x64
-		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Release|x64.Build.0 = Release|x64
-		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Release|x86.ActiveCfg = Release|Win32
-		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Release|x86.Build.0 = Release|Win32
-		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Debug|x64.ActiveCfg = Debug|x64
-		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Debug|x64.Build.0 = Debug|x64
-		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Debug|x86.ActiveCfg = Debug|Win32
-		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Debug|x86.Build.0 = Debug|Win32
-		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Release|x64.ActiveCfg = Release|x64
-		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Release|x64.Build.0 = Release|x64
-		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Release|x86.ActiveCfg = Release|Win32
-		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Release|x86.Build.0 = Release|Win32
-		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Debug|x64.ActiveCfg = Debug|x64
-		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Debug|x64.Build.0 = Debug|x64
-		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Debug|x86.ActiveCfg = Debug|Win32
-		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Debug|x86.Build.0 = Debug|Win32
-		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Release|x64.ActiveCfg = Release|x64
-		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Release|x64.Build.0 = Release|x64
-		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Release|x86.ActiveCfg = Release|Win32
-		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Release|x86.Build.0 = Release|Win32
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-		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Debug|x86.ActiveCfg = Debug|Win32
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-		SolutionGuid = {D6B8F75A-8322-45FC-87C0-577EA4FE9944}
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-EndGlobal
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+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28010.2036
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "static_library", "lib\static_library.vcxproj", "{990D865F-0DF2-40ED-8622-8DD0DB4A2128}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "app", "app\app.vcxproj", "{843D77A9-6E04-4515-91D5-A010A5CDF8E0}"
+	ProjectSection(ProjectDependencies) = postProject
+		{92DBD108-3D52-419D-BC33-217327A4AD9D} = {92DBD108-3D52-419D-BC33-217327A4AD9D}
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128} = {990D865F-0DF2-40ED-8622-8DD0DB4A2128}
+		{4EA09877-C87B-489E-9F80-A921D8E66E46} = {4EA09877-C87B-489E-9F80-A921D8E66E46}
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+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dynamic_library", "dll1\dynamic_library.vcxproj", "{92DBD108-3D52-419D-BC33-217327A4AD9D}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dynamic_library_with_implib", "dll2\dynamic_library_with_implib.vcxproj", "{4EA09877-C87B-489E-9F80-A921D8E66E46}"
+EndProject
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+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		DebugU|x64 = DebugU|x64
+		DebugU|x86 = DebugU|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+		ReleaseU|x64 = ReleaseU|x64
+		ReleaseU|x86 = ReleaseU|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Debug|x64.ActiveCfg = Debug|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Debug|x64.Build.0 = Debug|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Debug|x86.ActiveCfg = Debug|Win32
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Debug|x86.Build.0 = Debug|Win32
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.DebugU|x64.ActiveCfg = Debug|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.DebugU|x64.Build.0 = Debug|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.DebugU|x86.ActiveCfg = Debug|Win32
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.DebugU|x86.Build.0 = Debug|Win32
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Release|x64.ActiveCfg = Release|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Release|x64.Build.0 = Release|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Release|x86.ActiveCfg = Release|Win32
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Release|x86.Build.0 = Release|Win32
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.ReleaseU|x64.ActiveCfg = Release|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.ReleaseU|x64.Build.0 = Release|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.ReleaseU|x86.ActiveCfg = Release|Win32
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.ReleaseU|x86.Build.0 = Release|Win32
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Debug|x64.ActiveCfg = Debug|x64
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Debug|x64.Build.0 = Debug|x64
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Debug|x86.ActiveCfg = Debug|Win32
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Debug|x86.Build.0 = Debug|Win32
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.DebugU|x64.ActiveCfg = Debug|x64
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.DebugU|x64.Build.0 = Debug|x64
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.DebugU|x86.ActiveCfg = Debug|Win32
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.DebugU|x86.Build.0 = Debug|Win32
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Release|x64.ActiveCfg = Release|x64
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Release|x64.Build.0 = Release|x64
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Release|x86.ActiveCfg = Release|Win32
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.Release|x86.Build.0 = Release|Win32
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.ReleaseU|x64.ActiveCfg = Release|x64
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.ReleaseU|x64.Build.0 = Release|x64
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.ReleaseU|x86.ActiveCfg = Release|Win32
+		{843D77A9-6E04-4515-91D5-A010A5CDF8E0}.ReleaseU|x86.Build.0 = Release|Win32
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Debug|x64.ActiveCfg = Debug|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Debug|x64.Build.0 = Debug|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Debug|x86.ActiveCfg = Debug|Win32
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Debug|x86.Build.0 = Debug|Win32
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.DebugU|x64.ActiveCfg = Debug|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.DebugU|x64.Build.0 = Debug|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.DebugU|x86.ActiveCfg = Debug|Win32
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.DebugU|x86.Build.0 = Debug|Win32
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Release|x64.ActiveCfg = Release|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Release|x64.Build.0 = Release|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Release|x86.ActiveCfg = Release|Win32
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Release|x86.Build.0 = Release|Win32
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.ReleaseU|x64.ActiveCfg = Release|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.ReleaseU|x64.Build.0 = Release|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.ReleaseU|x86.ActiveCfg = Release|Win32
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.ReleaseU|x86.Build.0 = Release|Win32
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Debug|x64.ActiveCfg = Debug|x64
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Debug|x64.Build.0 = Debug|x64
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Debug|x86.ActiveCfg = Debug|Win32
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Debug|x86.Build.0 = Debug|Win32
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.DebugU|x64.ActiveCfg = Debug|x64
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.DebugU|x64.Build.0 = Debug|x64
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.DebugU|x86.ActiveCfg = Debug|Win32
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.DebugU|x86.Build.0 = Debug|Win32
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Release|x64.ActiveCfg = Release|x64
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Release|x64.Build.0 = Release|x64
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Release|x86.ActiveCfg = Release|Win32
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Release|x86.Build.0 = Release|Win32
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+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.ReleaseU|x64.Build.0 = Release|x64
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.ReleaseU|x86.ActiveCfg = Release|Win32
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.ReleaseU|x86.Build.0 = Release|Win32
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.Debug|x64.ActiveCfg = Debug|x64
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.Debug|x64.Build.0 = Debug|x64
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.Debug|x86.ActiveCfg = Debug|Win32
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.Debug|x86.Build.0 = Debug|Win32
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.DebugU|x64.ActiveCfg = DebugU|x64
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.DebugU|x64.Build.0 = DebugU|x64
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.DebugU|x86.ActiveCfg = DebugU|Win32
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.DebugU|x86.Build.0 = DebugU|Win32
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.Release|x64.ActiveCfg = Release|x64
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.Release|x64.Build.0 = Release|x64
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.Release|x86.ActiveCfg = Release|Win32
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.Release|x86.Build.0 = Release|Win32
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.ReleaseU|x64.ActiveCfg = ReleaseU|x64
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.ReleaseU|x64.Build.0 = ReleaseU|x64
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.ReleaseU|x86.ActiveCfg = ReleaseU|Win32
+		{8D72DE6B-17DF-4E55-BAF3-FA87112DCF57}.ReleaseU|x86.Build.0 = ReleaseU|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {D6B8F75A-8322-45FC-87C0-577EA4FE9944}
+	EndGlobalSection
+EndGlobal
diff --git a/exercise/02/code.cpp b/exercise/02/code.cpp
index 85e778c..a0d21f8 100644
--- a/exercise/02/code.cpp
+++ b/exercise/02/code.cpp
@@ -1,2 +1,17 @@
 #include "stdafx.h"
 #include "code.h"
+
+void f1 (int &a, int& b)
+{
+  int temp = a;
+  a = b;
+  b = temp;
+}
+
+void f2(int* const begin, int* const end)
+{
+  for (auto i=begin; i < end; ++i)
+  {
+    ++*i;
+  }
+}
\ No newline at end of file
diff --git a/exercise/02/code.h b/exercise/02/code.h
index e69de29..2b8efcb 100644
--- a/exercise/02/code.h
+++ b/exercise/02/code.h
@@ -0,0 +1,5 @@
+#pragma once
+
+void f1(int& a, int& b);
+
+void f2(int* begin, int* end);
\ No newline at end of file
diff --git a/exercise/02/test1.cpp b/exercise/02/test1.cpp
index 33dfab7..29b52ae 100644
--- a/exercise/02/test1.cpp
+++ b/exercise/02/test1.cpp
@@ -14,14 +14,14 @@ namespace simple_test
 		TEST_METHOD(f1_changes_values)
 		{
 			int a=1, b=2;
-			//f1(a, b);
+			f1(a, b);
 			Assert::AreEqual(2, a);
 			Assert::AreEqual(1, b);
 		}
 		TEST_METHOD(f2_increases_all_values_by_one)
 		{
 			int arr[] = { 1, 2, 3 };
-			//f2(arr, arr+3);
+			f2(arr, arr+3);
 			Assert::AreEqual(2, arr[0]);
 			Assert::AreEqual(3, arr[1]);
 			Assert::AreEqual(4, arr[2]);
@@ -29,7 +29,7 @@ namespace simple_test
 		TEST_METHOD(f2_works_for_different_number_of_values)
 		{
 			int arr[] = { 2, 4, 6, 8, 10 };
-			//f2(arr, arr+5);
+			f2(arr, arr+5);
 			Assert::AreEqual(3, arr[0]);
 			Assert::AreEqual(5, arr[1]);
 			Assert::AreEqual(7, arr[2]);