how to write function in funtion in c# code example

Example 1: function c#

public int AddNumbers(int number1, int number2)
{
    int result = number1 + number2;
    return result;
}

Example 2: how to make a function inside a function c#

public static void Main(string[] arg) {
 	Console.WriteLine("hello");
  	void World() {
     	Console.WriteLine("world") 
    }
  	world();
}

/*
output:
hello
world
*/