C#: Learn, how to create a user define function

using System;

// Define a class named 'funcexer1'
class funcexer1
{
    // Define a public static method 'welcome' that prints a welcome message
    public static void welcome() 
    {
        Console.WriteLine("Welcome Friends!");
    }

    // Define a public static method 'HaveAnice' that prints a message for a nice day
    public static void HaveAnice()
    {
        Console.WriteLine("Have a nice day!");
    }

    // Main method, the entry point of the program
    public static void Main()
    {
        // Print a description of the program
        Console.Write("\n\nSee, how to create an user define function :\n");
        Console.Write("------------------------------------------------\n"); 	

        // Call the 'welcome' method to print the welcome message
        welcome();

        // Call the 'HaveAnice' method to print the message for a nice day
        HaveAnice();
		
		// Print a new line
		Console.Write("\n");
    }
}