2016.02.23_c#...

//main

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using geom;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("hello");
            Pont p1 = new Pont(4, 5, "fekete");
            //Console.WriteLine("({0}, {1})", p1.x, p1.y);
            //###
            //Console.WriteLine("({0}, {1})", p1.getX(), p1.getY());
            //p1.setX(-3);
            //Console.WriteLine("({0}, {1})", p1.getX(), p1.getY());

            Console.WriteLine("({0}, {1}), {2}", p1.X, p1.Y, p1.Szin);
            p1.X = -3;
            Console.WriteLine("({0}, {1}), {2}", p1.X, p1.Y, p1.Szin);
        }
    }
}

##############

//pont.cs

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

namespace geom
{
    class Pont
    {
        private int x, y;
        public int X
        {
            get
            {
                return x;
            }
            set
            {
                x = value;
            }
        }

        public int Y
        {
            get
            {
                return y;
            }
            set
            {
                y = value;
            }
        }
        public string Szin { get; private set; }

        public Pont (int x, int y, string szin)
        {
            this.x = x;
            this.y = y;
            Szin = szin;
        }
        //public int getX()
        //{
        //    return x;
        //}

        //public int getY()
        //{
        //    return y;
        //}

        //public void setX(int x)
        //{
        //    this.x = x;
        //}
        //public void setY(int y)
        //{
        //    this.y = y;
        //}

    }
}