纸张的厚度循环

namespace 纸张的厚度循环
{
    class Program
    {
        static void Main(string[] args)
        {
            while (true)
            {
                double a;
                Console.WriteLine("请输入纸张的厚度：（毫米）");
                a =Convert.ToDouble(Console.ReadLine());
               
                for (int i = 2; i < 50; i++)
                {
                    a = a + a;
                    Console.WriteLine("对折"+(i-1)+"次的厚度为"+a+"毫米");
                }
                Console.ReadLine();
            }
        }
    }