31 lines
456 B
C#
31 lines
456 B
C#
using System;
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using System.Collections.Generic;
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class Test
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{
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static IEnumerable<int> FromTo (int from, int to)
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{
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while (from <= to) yield return from++;
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}
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public static int Main ()
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{
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IEnumerable<int> e = FromTo (1, 10);
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int i = 0;
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foreach (int x in e) {
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foreach (int y in e) {
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i += y;
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Console.Write ("{0,3} ", x * y);
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}
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Console.WriteLine ();
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}
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Console.WriteLine (i);
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if (i != 550)
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return i;
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return 0;
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}
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}
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