The Biggest of Five Numbers

using System;

class biggest3num
{
    static void Main()
    {
        Console.WriteLine("Write three numbers: ");
        double a = double.Parse(Console.ReadLine());
        double b = double.Parse(Console.ReadLine());
        double c = double.Parse(Console.ReadLine());

        if (a > b && a > c)
        {
            Console.WriteLine("The biggest number is {0}", a);
        }
        else if (b > a && b > c)
        {
            Console.WriteLine("The biggest number is {0}", b);
        }
        else if (c>a && c>b)
        {
            Console.WriteLine("The biggest number is {0}", c);
        }
    }
}