using System;
using System.Collections;
class MyClass : IEnumerator, IEnumerable {
char[] chrs = { 'A', 'B', 'C', 'D' };
int index = -1;
// Implement IEnumerable.
public IEnumerator GetEnumerator() {
return this;
}
// The following methods implement IEnumerator.
// Return the current object.
public object Current {
get {
return chrs[index];
}
}
// Advance to the next object.
public bool MoveNext() {
if(index == chrs.Length-1) {
Reset(); // reset enumerator at the end.
return false;
}
index++;
return true;
}
// Reset the enumerator to the start.
public void Reset() {
index = -1;
}
}
class MainClass {
public static void Main() {
MyClass mc = new MyClass();
// Display the contents of mc.
foreach(char ch in mc)
Console.Write(ch + " ");
Console.WriteLine();
// Display the contents of mc, again.
foreach(char ch in mc)
Console.Write(ch + " ");
Console.WriteLine();
}
}
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