using System;

public class Program

{

    public static void Main()

    {

        try {

            TestA();

        }

        catch (Exception ex)

        {

            Console.WriteLine("{0}", ex);

        }

    }

    public static void TestA()

    {

        try {

            TestB();

        }

        catch (Exception ex)

        {

            throw new Exception("Outer exception", ex);

        }

    }

    public static void TestB()

    {

        try {

            TestC();

        }

        catch (Exception ex)

        {

            throw new Exception("Middle exception", ex);

        }

    }

    public static void TestC()

    {

        throw new Exception("Inner exception");

    }

}