double hou = 0.00008;

         for (int i = 1; i > 0; i++)

         {

             hou = hou * 2;

             if (hou > 8848.13)

             {

                 System.out.println(i);

                 break;//跳出循环

             }

         }

 //阶乘

         Scanner a = new Scanner(System.in);

         int sum = 1;

         System.out.println("请输入一个数字");

         int shu = a.nextInt();

         for (int i = 1; i <= shu; i++)

         {

             sum = sum * i ;

         }

         System.out.println("结果为：" + sum);
         

 //计算 1+1/2!+1/3!+1/4!+...1/20!=?

         Scanner b = new Scanner(System.in);

         double he = 0;

         System.out.println("请输入数字：");

         double shuzi = b.nextInt();

         for (int i = 1; i <= shuzi; i++)

         {

             double jiecheng = 1;

             //求i的阶乘

             for (int j = 1; j <= i; j++)

             {

                 jiecheng = jiecheng*j/i;

             }

             he = he + jiecheng;//累加

         }

         System.out.println("阶乘的和为"+he);

         }

     }