18 lines
338 B
C#
18 lines
338 B
C#
//-- ex-nullable-sqrt
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using System;
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class MyTest {
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public static int? Sqrt(int? x) {
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if (x.HasValue && x.Value >= 0)
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return (int)(Math.Sqrt(x.Value));
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else
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return null;
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}
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public static void Main(String[] args) {
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// Prints :2:::
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Console.WriteLine(":{0}:{1}:{2}:", Sqrt(5), Sqrt(null), Sqrt(-5));
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}
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}
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