- using System; 
- using System.Drawing; 
- using System.Collections.Generic; 
-   
- public class Test 
- { 
- 	public static void Main() { 
-         Point[] arr = { new Point(10, 20), new Point(20, 40), new Point(40, 80) }; 
-   
-         arr[1].X = 30; 
-   
-         foreach (var pt in arr) { 
- 			Console.WriteLine(pt); 
- 		} 
-   
- 	} 
- } 
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