using System;

public class Program

{

    public static void Main()

    {

        int[] numbers = {1,2,5,7,8};

        int largest = numbers[0];

            for(int y = 0 ; y<numbers.Length  ; y++){

            if (largest < numbers[y]){

                largest = numbers[y];

            }

        }

        Console.WriteLine("Largest Number in the numbers array is = " + largest);

    }

}