using System;

public delegate T Format<T>(T x);

public delegate int FormatNumber();

public delegate string FormatString(string x);

class MainClass {

  static string name = "Kaca";

  public static void Main (string[] args) {

    // Format<string> f = x => x.ToUpper();

    // Console.WriteLine ( f(name) );

    Console.WriteLine
    (
      "Hello " + getName( x => x.ToUpper() )
    );

  }

  static string getName(FormatString format) {
    return format(name);
  }

}