Arrays - Add to each value in an array

using System;

namespace random
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] happiness = { 10, 15, 22, 30 };  //Initialize array of happiness values
            ImproveHappiness(happiness);           //Call ImproveHappieness method to increase all values in array by 2

            foreach (int happy in happiness)       //Print new values to console.
            {
                Console.WriteLine(happy);
            }
            Console.Read();

            //Output: 12, 17, 24, 32
        }
        // Method to increase each value in array by 2
        static void ImproveHappiness(int [] happyvalue)
        {
            for (int i = 0; i < happyvalue.Length; i++)
            {
                happyvalue[i] += 2;
            }
        }
    }
}