using System;

public class Program

{

    public static void Main()

    {

        int[] a = {4,5,6,7,8}; 

        int max = a[0];

        int max2 = 0;

        int i, j;

        for (i = 0; i <a.Length ; i++){

            if (a[i]>= max){

                j = max;

                max = a[i];

                max2 = j;

            }

        }

        Console.WriteLine("{0} is the second largest number.",max2);

    }

}