using System;

​

​

​

public class Test{

    public Test(){

    }

    public int M1(int x,ref int y,out int diff)

    {

        diff=x-y;

        y=y+3;

        Console.WriteLine("M1");

        return y;

    }

}

​

​

public class Program

{

    public static void Main()

    {

        Test t =new Test();

        int x=4;

        int y=2;

        int diff;

        int num=t.M1(x,ref y,out diff);

        Console.WriteLine("Hello World-->y value is-->"+num+" and out val of diff is -->"+diff);

    }

}