diff --git a/calculator223a5019.sln b/calculator223a5019.sln
new file mode 100644
index 0000000..9517b4e
--- /dev/null
+++ b/calculator223a5019.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.9.34622.214
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "calculator223a5019", "calculator223a5019\calculator223a5019.vcxproj", "{8A7C9901-B43C-4050-B7AE-40248762DB0A}"
+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
+		{8A7C9901-B43C-4050-B7AE-40248762DB0A}.Debug|x64.ActiveCfg = Debug|x64
+		{8A7C9901-B43C-4050-B7AE-40248762DB0A}.Debug|x64.Build.0 = Debug|x64
+		{8A7C9901-B43C-4050-B7AE-40248762DB0A}.Debug|x86.ActiveCfg = Debug|Win32
+		{8A7C9901-B43C-4050-B7AE-40248762DB0A}.Debug|x86.Build.0 = Debug|Win32
+		{8A7C9901-B43C-4050-B7AE-40248762DB0A}.Release|x64.ActiveCfg = Release|x64
+		{8A7C9901-B43C-4050-B7AE-40248762DB0A}.Release|x64.Build.0 = Release|x64
+		{8A7C9901-B43C-4050-B7AE-40248762DB0A}.Release|x86.ActiveCfg = Release|Win32
+		{8A7C9901-B43C-4050-B7AE-40248762DB0A}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {8DFCE0B1-F285-450C-A7F8-F914A842DE96}
+	EndGlobalSection
+EndGlobal
diff --git a/calculator223a5019/Calculator.cpp b/calculator223a5019/Calculator.cpp
new file mode 100644
index 0000000..4bf15dd
--- /dev/null
+++ b/calculator223a5019/Calculator.cpp
@@ -0,0 +1,18 @@
+#include "Calculator.h"
+
+double Calculator::Calculate(double x, char oper, double y)
+{
+    switch (oper)
+    {
+    case '+':
+        return x + y;
+    case '-':
+        return x - y;
+    case '*':
+        return x * y;
+    case '/':
+        return x / y;
+    default:
+        return 0.0;
+    }
+}
diff --git a/calculator223a5019/Calculator.h b/calculator223a5019/Calculator.h
new file mode 100644
index 0000000..67d37be
--- /dev/null
+++ b/calculator223a5019/Calculator.h
@@ -0,0 +1,7 @@
+#pragma once
+class Calculator
+{
+public:
+	double Calculate(double x, char oper, double y);
+};
+
diff --git a/calculator223a5019/calculator223a5019.cpp b/calculator223a5019/calculator223a5019.cpp
new file mode 100644
index 0000000..0406e44
--- /dev/null
+++ b/calculator223a5019/calculator223a5019.cpp
@@ -0,0 +1,40 @@
+// calculator223a5019.cpp : このファイルには 'main' 関数が含まれています。プログラム実行の開始と終了がそこで行われます。
+//
+
+#include <iostream>
+#include "Calculator.h"
+
+using namespace std;
+
+int main()
+{
+    double x = 0.0;
+    double y = 0.0;
+    double result = 0.0;
+    char oper = '+';
+
+    cout << "Calculator Console Application" << endl << endl;
+    cout << "Please enter the operation to perform. Format: a+b | a-b | a*b | a/b"
+        << endl;
+
+    Calculator c;
+    while (true)
+    {
+        cin >> x >> oper >> y;
+        result = c.Calculate(x, oper, y);
+        cout << "Result " << "of " << x << oper << y << " is: " << result << endl;
+    }
+
+    return 0;
+}
+
+// プログラムの実行: Ctrl + F5 または [デバッグ] > [デバッグなしで開始] メニュー
+// プログラムのデバッグ: F5 または [デバッグ] > [デバッグの開始] メニュー
+
+// 作業を開始するためのヒント: 
+//    1. ソリューション エクスプローラー ウィンドウを使用してファイルを追加/管理します 
+//   2. チーム エクスプローラー ウィンドウを使用してソース管理に接続します
+//   3. 出力ウィンドウを使用して、ビルド出力とその他のメッセージを表示します
+//   4. エラー一覧ウィンドウを使用してエラーを表示します
+//   5. [プロジェクト] > [新しい項目の追加] と移動して新しいコード ファイルを作成するか、[プロジェクト] > [既存の項目の追加] と移動して既存のコード ファイルをプロジェクトに追加します
+//   6. 後ほどこのプロジェクトを再び開く場合、[ファイル] > [開く] > [プロジェクト] と移動して .sln ファイルを選択します
diff --git a/calculator223a5019/calculator223a5019.vcxproj b/calculator223a5019/calculator223a5019.vcxproj
new file mode 100644
index 0000000..4b30c63
--- /dev/null
+++ b/calculator223a5019/calculator223a5019.vcxproj
@@ -0,0 +1,139 @@
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+      <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>
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+    <Keyword>Win32Proj</Keyword>
+    <ProjectGuid>{8a7c9901-b43c-4050-b7ae-40248762db0a}</ProjectGuid>
+    <RootNamespace>calculator223a5019</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
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+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
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+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
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+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v143</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
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+    <PlatformToolset>v143</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
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+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
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+  <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>
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+  <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="Calculator.cpp" />
+    <ClCompile Include="calculator223a5019.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="Calculator.h" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
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new file mode 100644
index 0000000..c790e5d
--- /dev/null
+++ b/calculator223a5019/calculator223a5019.vcxproj.filters
@@ -0,0 +1,30 @@
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\ No newline at end of file