IEQUATABLE INTERFACE

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace ConsoleApplication

{

    class Program : IEquatable

    {

        private int id;

        private string name;

        private double price;

        public Program(int a, string b, int c)

        {

            this.id = a;

            this.name = b;

            this.price = c;

        }

        public bool Equals(Program others)

        {

            return (this.id == others.id) && (this.name == others.name) && (this.price == others.price);

        }

        static void Main(string[] args)

        {

            Program p = new Program(1, "vijay", 2);

            Program p1 = new Program(1, "vijay", 9);

            if (p.Equals(p1))

                Console.WriteLine("the objects are equal");

            else

                Console.WriteLine("not equal");

        }

    }

}