using System;

public class Program

{

    public static void Main()

    {

        int value = 10;

        PassByRef(ref value);

        Console.WriteLine($"Main method value is {value} :");

    }

    static void PassByRef(ref int a)

    {

        a = a+10;

        Console.WriteLine($"PassByRef value is {a}");

    }

}