Math.Ceiling 只要有小数都加1

            double result1 = Math.Ceiling(0.3);
            Console.WriteLine(result1);//result1显示1

            double result2 = Math.Ceiling(0.5);
            Console.WriteLine(result2);//result2显示1

            double result3 = Math.Ceiling(0.6);
            Console.WriteLine(result3);//result3显示1         

            Console.Read();