diff --git a/19/Lab19/Lab19.cpp b/19/Lab19/Lab19.cpp
new file mode 100644
index 0000000..81607a2
--- /dev/null
+++ b/19/Lab19/Lab19.cpp
@@ -0,0 +1,25 @@
+#include <iostream>
+#include <string>
+#include <windows.h>
+
+using namespace std;
+
+int main() {
+
+    SetConsoleOutputCP(CP_UTF8);
+
+    string str;
+    cout << "Введіть строку: ";
+    getline(cin, str);
+
+    if (str.length() > 1) {
+        char first = str[0];
+        char last = str[str.length() - 1];
+        str[0] = last;
+        str[str.length() - 1] = first;
+    }
+
+    cout << "Нова строка: " << str << endl;
+
+    return 0;
+}
\ No newline at end of file
diff --git a/19/Lab19/Lab19.sln b/19/Lab19/Lab19.sln
new file mode 100644
index 0000000..8147fcf
--- /dev/null
+++ b/19/Lab19/Lab19.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.3.32929.385
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Lab19", "Lab19.vcxproj", "{4310C7FD-B334-4234-B880-424918DE83CC}"
+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
+		{4310C7FD-B334-4234-B880-424918DE83CC}.Debug|x64.ActiveCfg = Debug|x64
+		{4310C7FD-B334-4234-B880-424918DE83CC}.Debug|x64.Build.0 = Debug|x64
+		{4310C7FD-B334-4234-B880-424918DE83CC}.Debug|x86.ActiveCfg = Debug|Win32
+		{4310C7FD-B334-4234-B880-424918DE83CC}.Debug|x86.Build.0 = Debug|Win32
+		{4310C7FD-B334-4234-B880-424918DE83CC}.Release|x64.ActiveCfg = Release|x64
+		{4310C7FD-B334-4234-B880-424918DE83CC}.Release|x64.Build.0 = Release|x64
+		{4310C7FD-B334-4234-B880-424918DE83CC}.Release|x86.ActiveCfg = Release|Win32
+		{4310C7FD-B334-4234-B880-424918DE83CC}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {32FB36A3-957C-4C10-A924-F92AC3F12083}
+	EndGlobalSection
+EndGlobal
diff --git a/19/Lab19/Lab19.vcxproj b/19/Lab19/Lab19.vcxproj
new file mode 100644
index 0000000..093c395
--- /dev/null
+++ b/19/Lab19/Lab19.vcxproj
@@ -0,0 +1,135 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" 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>16.0</VCProjectVersion>
+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{4310c7fd-b334-4234-b880-424918de83cc}</ProjectGuid>
+    <RootNamespace>Lab19</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(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" />
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <PreprocessorDefinitions>NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="Lab19.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/19/Lab19/Lab19.vcxproj.filters b/19/Lab19/Lab19.vcxproj.filters
new file mode 100644
index 0000000..18967ef
--- /dev/null
+++ b/19/Lab19/Lab19.vcxproj.filters
@@ -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="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;c++;cppm;ixx;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;h++;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="Lab19.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/19/Lab19/Lab19.vcxproj.user b/19/Lab19/Lab19.vcxproj.user
new file mode 100644
index 0000000..88a5509
--- /dev/null
+++ b/19/Lab19/Lab19.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>
\ No newline at end of file
diff --git a/19/Lab19/x64/Debug/Lab19.exe b/19/Lab19/x64/Debug/Lab19.exe
new file mode 100644
index 0000000..a08d5f8
Binary files /dev/null and b/19/Lab19/x64/Debug/Lab19.exe differ
diff --git a/19/Lab19/x64/Debug/Lab19.exe.recipe b/19/Lab19/x64/Debug/Lab19.exe.recipe
new file mode 100644
index 0000000..33d2ca7
--- /dev/null
+++ b/19/Lab19/x64/Debug/Lab19.exe.recipe
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project>
+  <ProjectOutputs>
+    <ProjectOutput>
+      <FullPath>D:\2 семестр\Технології програмування\Lab19\x64\Debug\Lab19.exe</FullPath>
+    </ProjectOutput>
+  </ProjectOutputs>
+  <ContentFiles />
+  <SatelliteDlls />
+  <NonRecipeFileRefs />
+</Project>
\ No newline at end of file
diff --git a/19/Lab19/x64/Debug/Lab19.ilk b/19/Lab19/x64/Debug/Lab19.ilk
new file mode 100644
index 0000000..8ca8307
Binary files /dev/null and b/19/Lab19/x64/Debug/Lab19.ilk differ
diff --git a/19/Lab19/x64/Debug/Lab19.log b/19/Lab19/x64/Debug/Lab19.log
new file mode 100644
index 0000000..87616ed
--- /dev/null
+++ b/19/Lab19/x64/Debug/Lab19.log
@@ -0,0 +1,22 @@
+  Lab19.cpp
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(8,13): warning C4566: character represented by universal-character-name '\u0412' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(8,13): warning C4566: character represented by universal-character-name '\u0432' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(8,13): warning C4566: character represented by universal-character-name '\u0435' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(8,13): warning C4566: character represented by universal-character-name '\u0434' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(8,13): warning C4566: character represented by universal-character-name '\u0456' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(8,13): warning C4566: character represented by universal-character-name '\u0442' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(8,13): warning C4566: character represented by universal-character-name '\u044C' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(8,13): warning C4566: character represented by universal-character-name '\u0441' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(8,13): warning C4566: character represented by universal-character-name '\u0440' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(8,13): warning C4566: character represented by universal-character-name '\u043E' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(8,13): warning C4566: character represented by universal-character-name '\u043A' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(8,13): warning C4566: character represented by universal-character-name '\u0443' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(18,13): warning C4566: character represented by universal-character-name '\u041D' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(18,13): warning C4566: character represented by universal-character-name '\u043E' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(18,13): warning C4566: character represented by universal-character-name '\u0432' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(18,13): warning C4566: character represented by universal-character-name '\u0430' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(18,13): warning C4566: character represented by universal-character-name '\u0441' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(18,13): warning C4566: character represented by universal-character-name '\u0442' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(18,13): warning C4566: character represented by universal-character-name '\u0440' cannot be represented in the current code page (1252)
+D:\2 семестр\Технології програмування\Lab19\Lab19.cpp(18,13): warning C4566: character represented by universal-character-name '\u043A' cannot be represented in the current code page (1252)
+  Lab19.vcxproj -> D:\2 семестр\Технології програмування\Lab19\x64\Debug\Lab19.exe
diff --git a/19/Lab19/x64/Debug/Lab19.obj b/19/Lab19/x64/Debug/Lab19.obj
new file mode 100644
index 0000000..14e239f
Binary files /dev/null and b/19/Lab19/x64/Debug/Lab19.obj differ
diff --git a/19/Lab19/x64/Debug/Lab19.pdb b/19/Lab19/x64/Debug/Lab19.pdb
new file mode 100644
index 0000000..2c3bc97
Binary files /dev/null and b/19/Lab19/x64/Debug/Lab19.pdb differ
diff --git a/19/Lab19/x64/Debug/Lab19.tlog/CL.command.1.tlog b/19/Lab19/x64/Debug/Lab19.tlog/CL.command.1.tlog
new file mode 100644
index 0000000..5bf82d6
Binary files /dev/null and b/19/Lab19/x64/Debug/Lab19.tlog/CL.command.1.tlog differ
diff --git a/19/Lab19/x64/Debug/Lab19.tlog/CL.read.1.tlog b/19/Lab19/x64/Debug/Lab19.tlog/CL.read.1.tlog
new file mode 100644
index 0000000..1ffdd04
Binary files /dev/null and b/19/Lab19/x64/Debug/Lab19.tlog/CL.read.1.tlog differ
diff --git a/19/Lab19/x64/Debug/Lab19.tlog/CL.write.1.tlog b/19/Lab19/x64/Debug/Lab19.tlog/CL.write.1.tlog
new file mode 100644
index 0000000..d40b972
Binary files /dev/null and b/19/Lab19/x64/Debug/Lab19.tlog/CL.write.1.tlog differ
diff --git a/19/Lab19/x64/Debug/Lab19.tlog/Lab19.lastbuildstate b/19/Lab19/x64/Debug/Lab19.tlog/Lab19.lastbuildstate
new file mode 100644
index 0000000..1d966c3
--- /dev/null
+++ b/19/Lab19/x64/Debug/Lab19.tlog/Lab19.lastbuildstate
@@ -0,0 +1,2 @@
+PlatformToolSet=v143:VCToolArchitecture=Native64Bit:VCToolsVersion=14.33.31629:TargetPlatformVersion=10.0.19041.0:
+Debug|x64|D:\2 семестр\Технології програмування\Lab19\|
diff --git a/19/Lab19/x64/Debug/Lab19.tlog/link.command.1.tlog b/19/Lab19/x64/Debug/Lab19.tlog/link.command.1.tlog
new file mode 100644
index 0000000..9c42a5b
Binary files /dev/null and b/19/Lab19/x64/Debug/Lab19.tlog/link.command.1.tlog differ
diff --git a/19/Lab19/x64/Debug/Lab19.tlog/link.read.1.tlog b/19/Lab19/x64/Debug/Lab19.tlog/link.read.1.tlog
new file mode 100644
index 0000000..daa61e7
Binary files /dev/null and b/19/Lab19/x64/Debug/Lab19.tlog/link.read.1.tlog differ
diff --git a/19/Lab19/x64/Debug/Lab19.tlog/link.write.1.tlog b/19/Lab19/x64/Debug/Lab19.tlog/link.write.1.tlog
new file mode 100644
index 0000000..075752c
Binary files /dev/null and b/19/Lab19/x64/Debug/Lab19.tlog/link.write.1.tlog differ
diff --git a/19/Lab19/x64/Debug/Lab19.vcxproj.FileListAbsolute.txt b/19/Lab19/x64/Debug/Lab19.vcxproj.FileListAbsolute.txt
new file mode 100644
index 0000000..32c2010
--- /dev/null
+++ b/19/Lab19/x64/Debug/Lab19.vcxproj.FileListAbsolute.txt
@@ -0,0 +1 @@
+D:\2 семестр\Технології програмування\Lab19\x64\Debug\Lab19.exe
diff --git a/19/Lab19/x64/Debug/vc143.idb b/19/Lab19/x64/Debug/vc143.idb
new file mode 100644
index 0000000..9e728e0
Binary files /dev/null and b/19/Lab19/x64/Debug/vc143.idb differ
diff --git a/19/Lab19/x64/Debug/vc143.pdb b/19/Lab19/x64/Debug/vc143.pdb
new file mode 100644
index 0000000..7f424b9
Binary files /dev/null and b/19/Lab19/x64/Debug/vc143.pdb differ