这个年龄计算程序相当不科学，体验还是差差哒

DateTime bdDT = new DateTime();
            DateTime timenow = DateTime.Now;
            Console.WriteLine("请输入您的年龄");
            int age = int.Parse(Console.ReadLine());
            Console.WriteLine("请输入你今年的生日，如2015-10-5");
            string bdST = Console.ReadLine();
            bdDT = Convert.ToDateTime(bdST);
            int intYearNow=bdDT .Year ;
            int intYearNext=bdDT .Year  +1;
            int Days=0;
            int intDay = bdDT.Day;
            int intMonth = bdDT.Month;
            int intDayNow = timenow.Day;
            int intMonthNow = timenow.Month;
            int DayNowNum=timenow .DayOfYear;
            int DaybdNum=bdDT .DayOfYear;
            int bdNextNum=0;
           //判断今年是不是闰年
            if (intYearNow%4==0&&intYearNow %100!=0)
            {
                Days =366;
                if (intMonth >2)
                bdNextNum =DayNowNum-1;    //如果今年是闰年，那第二年肯定不是闰年
                else
                bdNextNum =DayNowNum;      //小于2月则每一年的第几天生日不会改变
            }

            else
                Days =365;
            if (intDayNow - intDay >= 0)
            {
                if (intMonthNow - intMonth >= 0)
                    Console.WriteLine("您还有" + (intMonthNow - intMonth) + "个月零" + (intDayNow - intDay) + "天,总共" + (Days-DayNowNum + bdNextNum) + "天，就过生日啦");
                else
                    Console.WriteLine("您还差" + (intDayNow - intDay) + "天不到" + (intMonth - intMonthNow) + "个月总共" + (DaybdNum - DayNowNum) + "天，就过生日啦");
            }
            else
            {
                if (intMonthNow - intMonth >= 0)
                    Console.WriteLine("您还差" + (intDay - intDayNow) + "天不到" + (12 - intMonthNow + intMonth) + "个月总共" + (Days - DayNowNum + bdNextNum) + "天就过生日了");
                else
                    Console.WriteLine("您还差" + (intDay - intDayNow) + "天不到" + (intMonth - intMonthNow) + "个月总共" + (DaybdNum - DayNowNum) + "天就过生日了");
            }
            Console.WriteLine("您的出生日期为"+(bdDT .Year-age)+"年"+intMonth+"月"+intDay+"日");

            Console.ReadLine();