using System;
 
public class Test
{
	public static void Main()
	{
		        string str = "1234";
                        char[] array = str.ToCharArray();
                        string final = "";
                        foreach (var i in array)
                        {
                            string hex = String.Format("{0:X}", Convert.ToInt32(i));
                            final += hex.Insert(0, "0X") + " ";       
                        }
                        final = final.TrimEnd();
                        Console.WriteLine(final);
 
	}
}

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