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// Compiler options: -langversion:default
using System;
using System.Collections;
class X {
static int start, end;
static int i;
static IEnumerator GetRange ()
{
yield return 1;
for (i = start; i < end; i++)
yield return i;
yield return 100;
}
public static int Main ()
{
start = 10;
end = 30;
int total = 0;
IEnumerator e = GetRange ();
while (e.MoveNext ()){
Console.WriteLine ("Value=" + e.Current);
total += (int) e.Current;
}
if (total != 491)
return 1;
return 0;
}
}
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