using System;

public class Program

{

    public static void Main()

    {

        double[] arr = new double[] {17.5, 2, 106.8, 30, 11.4, 301.55, 50, 83.2};

        double max = arr[0];

        for(int i = 1; i < arr.Length ; i++)

        {

            if (arr[i] > max)

                max = arr[i];

​

        }

        Console.WriteLine("The biggest number in this array is: {0}", max);

    }

}