초기 커밋.

ExP.Interface/Program.cs

@@ -0,0 +1,35 @@
+using System.ComponentModel;
+using System.Data;
+
+public class MyConnection : Component, IDbConnection, IDisposable
+{
+    // IDbConnection을 구현
+    // IDisposable을 구현
+}
+
+internal class Program
+{
+    private static void Main(string[] args)
+    {
+        Console.WriteLine("Hello, World!");
+    }
+}
+
+public interface IComparable
+{
+    // 멤버 앞에 접근제한자 사용 안함
+    int CompareTo(object obj);
+}
+
+public class MyClass : IComparable
+{
+    private int key;
+    private int value;
+
+    // IComparable 의 CompareTo 메서드 구현
+    public int CompareTo(object obj)
+    {
+        MyClass target = (MyClass)obj;
+        return this.key.CompareTo(target.key);
+    }
+}