using System;

public class Program

{

    public static void Main()

    {

         Console.WriteLine(GetInitials("John Smith"));  // JS

         Console.WriteLine(GetInitials("Smith, John")); // SJ

         Console.WriteLine(GetInitials("John"));        // J

         Console.WriteLine(GetInitials("Smith"));       // S

​

         Console.WriteLine(GetInitials("John Smith William"));   // JSW

         Console.WriteLine(GetInitials("John     H       Doe"));   // JHD

    }

​

    static string GetInitials(string name)

    {                       

        // StringSplitOptions.RemoveEmptyEntries excludes empty spaces returned by the Split method

​

        string[] nameSplit = name.Split(new string[] { "," , " "}, StringSplitOptions.RemoveEmptyEntries);

        string initials = "";

​

        foreach (string item in nameSplit)

        {                

            initials += item.Substring(0, 1).ToUpper();

        }

​

        return initials;           

    }

}