using System;
public class Program
{
public static void Main()
int[] grades= new int[2];
grades[0]=50;
Console.WriteLine("my array method before :{0}",grades[0]);
myarraymethod(grades);
Console.WriteLine("my array method after :{0}",grades[0]);
}
public static void myarraymethod(int[] grades){
grades[0]+=20;
//pass by refrence
