biggest of 3

using System;

    class Program
    {
        static void Main()
        {
            double first, second, third,max;
            Console.Write("Please enter a= ");
            first = double.Parse(Console.ReadLine());    
            Console.Write("Please enter b= ");
            second = double.Parse(Console.ReadLine());   
            Console.Write("Please enter c= ");
            third = double.Parse(Console.ReadLine());
            max = Math.Max(first, Math.Max(second, third));
            Console.WriteLine("Biggest "+ (max));
        }
    }