- using System; 
-   
- public class Test 
- { 
- 	public static void f(int i) { 
- 		Console.WriteLine(i); 
- 	} 
-   
- 	public static void g(int? i) { 
- 		if (i == null) { 
- 			Console.WriteLine("null"); 
- 		} else { 
- 			Console.WriteLine(i); 
- 		} 
- 	} 
-   
- 	public static void Main() 
- 	{ 
- 		f(1); 
- 		// f(null); // neprojde 
-   
- 		g(2); 
- 		g(null); 
-   
- 		// Test? t; // neprojde 
- 	} 
- } 
-   
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