stack-overflow.cs

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

namespace ConsoleApplication3
{
    class My
    {
        public static void Main()
        {

            ////creating
            //MyPoint p = new MyPoint();
            //MyPoint k = new MyPoint();
            //MyPoint l = new MyPoint { X = 1, Y = 2, Z = 3 };
            //MyPoint n = new MyPoint { X = 1, Y = 2, Z = 3 };
            //MyPoint a = l;

            ////viewing
            //Console.WriteLine(p.ToString());
            //Console.WriteLine(l.ToString());

            ////equality
            ////Console.WriteLine(l.Equals(n));
            ////Console.WriteLine(p.Equals(n));
            //Console.WriteLine("\n");
            //Console.WriteLine(Object.Equals(l, n));
            //Console.WriteLine(Object.Equals(l, a));

            ////hash
            //Console.WriteLine(l.GetHashCode());

            MyPoint a1 = new MyPoint();
            foreach (MyPoint x in a1)
                Console.WriteLine(x.X);
            
            Console.ReadLine();
        }
    }

    class MyPoint : IEnumerable
    {
        int x;
        int y;
        int z;

        MyPoint[] arr;

        public int X
        {
            get { return x;  }
            set { x = value; }
        }

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

        public int Z
        {
            get { return z; }
            set { z = value; }
        }

        public MyPoint()
        {
            arr = new MyPoint[4];
            arr[0] = new MyPoint { X = 1, Y = 2, Z = 3 };
            arr[1] = new MyPoint { X = 2, Y = 2, Z = 3 };
            arr[2] = new MyPoint { X = 3, Y = 2, Z = 3 };
            arr[3] = new MyPoint { X = 4, Y = 2, Z = 3 };

            Random r = new Random();
            x = r.Next(1, 101);
            y = r.Next(1, 101);
            z = r.Next(1, 101);
        }

        public IEnumerator GetEnumerator()
        {
            return arr.GetEnumerator();
        }
        
        public override string ToString()
        {
            return String.Format("First field = {0}\nSecond field = {1}\nThird field = {2}\n", x, y, z);
        }

        public override bool Equals(object obj)
        {
            MyPoint p = obj as MyPoint;
            if (p != null)
            {
                if (this.x == p.x && this.y == p.y && this.Z == p.Z)
                    return true;
            }

            return false;
        }

        public override int GetHashCode()
        {
            return this.ToString().GetHashCode();
        }
    }

}