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0216 Operators for nullable type

using System; using System.IO; class Test { static void Main() { int? x = 5; int? y = null; // Equality operator examples Console.WriteLine(x == y); // False Console.WriteLine(x == null); // False Console.WriteLine(x == 5); // True Console.WriteLine(y == null); // True Console.WriteLine(y == 5); // False Console.WriteLine(y != 5); // True // Relational operator examples Console.WriteLine(x < 6); // True Console.WriteLine(y < 6); // False Console.WriteLine(y > 6); // False // All other operator examples Console.WriteLine(x + 5); // 10 Console.WriteLine(x + y); // null (prints empty line) } } The output: False False True True False True True False False 10