C#

Program.cs
--------------------
using System;
using System.Collections.Generic;
using System.Text;

namespace TestConsole
{

//  public  class MainConsole  
//  program is built successfully when using this line instead of the bottom one
    
    class MainConsole // default scope for this class??
    {
        public const int myAge = 27;

        public int returnZero()
        {
            return 0;
            //return (number1 + number2);
        }
        static void Main(string[] args)
        {
            Console.WriteLine("Start program");
        }
    }

myClass.cs
---------------------------
using System;
using System.Collections.Generic;
using System.Text;

namespace TestConsole
{
    class myClass : TestConsole.MainConsole
    {
        private int Age;
        public myClass()
        {
            //initialize Age to zero (long-winded)
            Age = base.returnZero();
        }
    }
}