diff --git a/exercise/01/app/app.cpp b/exercise/01/app/app.cpp
new file mode 100644
index 0000000..28ff663
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..14774c9
--- /dev/null
+++ b/exercise/01/app/app.vcxproj
@@ -0,0 +1,200 @@
+<?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>{E9C4227A-E42C-44DB-B52B-A29CC9E11111}</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>
+    <OutDir>$(Platform)\$(Configuration)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+    <OutDir>$(Platform)\$(Configuration)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+    <OutDir>$(Platform)\$(Configuration)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+    <OutDir>$(Platform)\$(Configuration)\</OutDir>
+    <IntDir>$(Platform)\$(Configuration)\</IntDir>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>Create</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>
+    <PreBuildEvent>
+      <Command>copy "..\dll1\$(Platform)\$(Configuration)\dynamic_library.dll" "$(Platform)\$(Configuration)\"
+copy "..\dll2\$(Platform)\$(Configuration)\dynamic_library_with_implib.dll" "$(Platform)\$(Configuration)\"</Command>
+    </PreBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>Create</PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_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>
+    <PreBuildEvent>
+      <Command>copy "..\dll1\$(Platform)\$(Configuration)\dynamic_library.dll" "$(Platform)\$(Configuration)\"
+copy "..\dll2\$(Platform)\$(Configuration)\dynamic_library_with_implib.dll" "$(Platform)\$(Configuration)\"</Command>
+    </PreBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>Create</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>
+    </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>
+    <PreBuildEvent>
+      <Command>copy "..\dll1\$(Platform)\$(Configuration)\dynamic_library.dll" "$(Platform)\$(Configuration)\"
+copy "..\dll2\$(Platform)\$(Configuration)\dynamic_library_with_implib.dll" "$(Platform)\$(Configuration)\"</Command>
+    </PreBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <PrecompiledHeader>Create</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>
+    <PreBuildEvent>
+      <Command>copy "..\dll1\$(Platform)\$(Configuration)\dynamic_library.dll" "$(Platform)\$(Configuration)\"
+copy "..\dll2\$(Platform)\$(Configuration)\dynamic_library_with_implib.dll" "$(Platform)\$(Configuration)\"</Command>
+    </PreBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="app.cpp">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Use</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Use</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Use</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Use</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="pch.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h" />
+  </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..95c9b51
--- /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>
+    <ClCompile Include="app.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="pch.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="pch.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+  </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..fea5e2c 100644
--- a/exercise/01/e01.sln
+++ b/exercise/01/e01.sln
@@ -5,17 +5,17 @@ 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}"
+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
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "app", "app\app.vcxproj", "{E9C4227A-E42C-44DB-B52B-A29CC9E11111}"
 	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
@@ -26,36 +26,36 @@ Global
 	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
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Debug|x86.ActiveCfg = Debug|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Debug|x86.Build.0 = Debug|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Release|x64.ActiveCfg = Debug|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Release|x64.Build.0 = Debug|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Release|x86.ActiveCfg = Debug|x64
+		{990D865F-0DF2-40ED-8622-8DD0DB4A2128}.Release|x86.Build.0 = Debug|x64
 		{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
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Debug|x86.ActiveCfg = Debug|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Debug|x86.Build.0 = Debug|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Release|x64.ActiveCfg = Debug|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Release|x64.Build.0 = Debug|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Release|x86.ActiveCfg = Debug|x64
+		{92DBD108-3D52-419D-BC33-217327A4AD9D}.Release|x86.Build.0 = Debug|x64
 		{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}.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
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Debug|x86.ActiveCfg = Debug|x64
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Debug|x86.Build.0 = Debug|x64
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Release|x64.ActiveCfg = Debug|x64
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Release|x64.Build.0 = Debug|x64
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Release|x86.ActiveCfg = Debug|x64
+		{4EA09877-C87B-489E-9F80-A921D8E66E46}.Release|x86.Build.0 = Debug|x64
+		{E9C4227A-E42C-44DB-B52B-A29CC9E11111}.Debug|x64.ActiveCfg = Debug|x64
+		{E9C4227A-E42C-44DB-B52B-A29CC9E11111}.Debug|x64.Build.0 = Debug|x64
+		{E9C4227A-E42C-44DB-B52B-A29CC9E11111}.Debug|x86.ActiveCfg = Debug|x64
+		{E9C4227A-E42C-44DB-B52B-A29CC9E11111}.Debug|x86.Build.0 = Debug|x64
+		{E9C4227A-E42C-44DB-B52B-A29CC9E11111}.Release|x64.ActiveCfg = Debug|x64
+		{E9C4227A-E42C-44DB-B52B-A29CC9E11111}.Release|x64.Build.0 = Debug|x64
+		{E9C4227A-E42C-44DB-B52B-A29CC9E11111}.Release|x86.ActiveCfg = Debug|x64
+		{E9C4227A-E42C-44DB-B52B-A29CC9E11111}.Release|x86.Build.0 = Debug|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/exercise/02/code.cpp b/exercise/02/code.cpp
index 85e778c..1d59eba 100644
--- a/exercise/02/code.cpp
+++ b/exercise/02/code.cpp
@@ -1,2 +1,14 @@
 #include "stdafx.h"
 #include "code.h"
+#include <algorithm>
+
+void f1(int& a, int& b)
+{
+	std::swap(a, b);
+}
+
+void f2(int* begin, int* end)
+{
+	if (begin > end) return;
+	std::transform(begin, end, begin, [](int n) {return n + 1; });
+}
\ No newline at end of file
diff --git a/exercise/02/code.h b/exercise/02/code.h
index e69de29..716db83 100644
--- a/exercise/02/code.h
+++ b/exercise/02/code.h
@@ -0,0 +1,5 @@
+
+
+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..b8ca411 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]);
@@ -29,12 +29,41 @@ 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]);
 			Assert::AreEqual(9, arr[3]);
 			Assert::AreEqual(11, arr[4]);
 		}
+
+		TEST_METHOD(f2_custom_interval)
+		{
+			int arr[] = { 2, 4, 6, 8, 10 };
+			f2(arr + 1, arr + 4);
+			Assert::AreEqual(2, arr[0]);
+			Assert::AreEqual(5, arr[1]);
+			Assert::AreEqual(7, arr[2]);
+			Assert::AreEqual(9, arr[3]);
+			Assert::AreEqual(10, arr[4]);
+		}
+
+		TEST_METHOD(f2_wrong_size_too_small)
+		{
+			int arr[] = { 2, 4, 6 }; // OK
+			f2(arr, arr + 2);
+			Assert::AreEqual(3, arr[0]);
+			Assert::AreEqual(5, arr[1]);
+			Assert::AreEqual(6, arr[2]);
+		}
+
+		TEST_METHOD(f2_end_to_begin)
+		{
+			int arr[] = { 2, 4, 6 };
+			f2(arr + 2, arr);
+			Assert::AreEqual(2, arr[0]);
+			Assert::AreEqual(4, arr[1]);
+			Assert::AreEqual(6, arr[2]);
+		}
 	};
 }