using System;

public class Program

{

     public void display( int[] arr ){

    for(int i =0;i<arr.Length;i++)

        {

        for(int j=0;j<arr.Length;j++)

        {

           Console.WriteLine(arr[i] + arr [j]);

        }

         }  

         }

    public  void Main(String [] args)

    {

        Program ob = new Program();

        int [] arr1 = {1,2,3,4};

        int [] arr2 = {5,6,7,8};

        ob.display(arr1);

        ob.display(arr2);

​

    }

}