diff --git a/CalculatorTutorial 1.sln b/CalculatorTutorial 1.sln
new file mode 100644
index 0000000..1f141a3
--- /dev/null
+++ b/CalculatorTutorial 1.sln
@@ -0,0 +1,31 @@
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+EndProject
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+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
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+		Debug|x86 = Debug|x86
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+		Release|x86 = Release|x86
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+		{CB157522-4F5F-4B04-98FE-D5CD7C9ACFD4}.Debug|x86.Build.0 = Debug|Win32
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+		{CB157522-4F5F-4B04-98FE-D5CD7C9ACFD4}.Release|x64.Build.0 = Release|x64
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diff --git a/CalculatorTutorial 1/Calculator.cpp b/CalculatorTutorial 1/Calculator.cpp
new file mode 100644
index 0000000..03c8397
--- /dev/null
+++ b/CalculatorTutorial 1/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;
+    }
+}
\ No newline at end of file
diff --git a/CalculatorTutorial 1/Calculator.h b/CalculatorTutorial 1/Calculator.h
new file mode 100644
index 0000000..5d1e8f4
--- /dev/null
+++ b/CalculatorTutorial 1/Calculator.h
@@ -0,0 +1,6 @@
+#pragma once
+class Calculator
+{
+public:
+    double Calculate(double x, char oper, double y);
+};
diff --git a/CalculatorTutorial 1/CalculatorTutorial 1.cpp b/CalculatorTutorial 1/CalculatorTutorial 1.cpp
new file mode 100644
index 0000000..0ca19a1
--- /dev/null
+++ b/CalculatorTutorial 1/CalculatorTutorial 1.cpp
@@ -0,0 +1,47 @@
+// CalculatorTutorial.cpp : This file contains the 'main' function. Program execution begins and ends there.
+//
+
+#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;
+        if (oper == '/' && y == 0)
+        {
+            cout << "Attempted to divide by zero!" << endl;
+            continue;
+        }
+        else
+        {
+            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/CalculatorTutorial 1/CalculatorTutorial 1.vcxproj b/CalculatorTutorial 1/CalculatorTutorial 1.vcxproj
new file mode 100644
index 0000000..0e57808
--- /dev/null
+++ b/CalculatorTutorial 1/CalculatorTutorial 1.vcxproj
@@ -0,0 +1,139 @@
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\ No newline at end of file
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new file mode 100644
index 0000000..dfa9a8e
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@@ -0,0 +1,30 @@
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\ No newline at end of file