IEnumeratorExample, C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            //Your code goes here
            IEnumerable<int> numbers=new int[]{1,2,3,4,5,6,7,8,9};
            var enumerator= numbers.GetEnumerator();
            while(enumerator.MoveNext())
            {
                if(enumerator.Current<=5)
                {
                    Console.WriteLine(enumerator.Current);
                }
                else
                {
                    break;
                }
            }
            
            Console.WriteLine("*****************");
            do
            {
                Console.WriteLine(enumerator.Current);
            }
            while(enumerator.MoveNext());
            Console.WriteLine("Hello, world!");
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,16 sec, absolute running time: 0,11 sec, cpu time: 0,09 sec, average memory usage: 13 Mb, average nr of threads: 3