C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Test_Inheritance
{
    class Program
    {
        static void Main(string[] args)
        {
            B test = new B();
            test.PrintString();
        }
    }

    class A
    {
        string x = "Hello1";

        public void PrintString()
        {
            Console.WriteLine(x);
        }

    }

    class B:A
    {
        string x = "Hello2";
    }
}