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

namespace Trial
{
    class Eldest
    {
        public static void Main()
        {
            int i, eldest;
            int[] array = new int[5];
            for (i = 0; i < 5; i++)
            {
                Console.WriteLine("enter elements: {0}", i + 1);
                array[i] = Convert.ToInt32(Console.ReadLine());
            }
            eldest = array[0];
            for (i = 1; i < 5; i++)    //start from 1 as you are already considering 0th as max
            {
                if (array[i] > eldest)
                {
                    eldest = array[i];
                }
            }
            Console.WriteLine("the eldest number is {0}", eldest);
            Console.ReadLine();
        }
    }
}