using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Text;
public class MainClass
{
public static void Main()
{
IEnumerable enumerable = new string[] { "A", "B", "C" };
foreach (string s in enumerable)
Console.WriteLine(s);
IEnumerator enumerator = enumerable.GetEnumerator();
while (enumerator.MoveNext())
{
string s = enumerator.Current;
Console.WriteLine(s);
}
}
}