实现阴历与阳历的相互转换，挺方便的 还其他辅助功能：闰年判断、日期间隔-The realization of the lunar calendar with the solar calendar the mutual conversion, very convenient also other auxiliary functions: to determine leap year, date interval

题目：输入某年某月某日，判断这一天是这一年的第几天？ 1.程序分析：以3月5日为例，应该先把前两个月的加起来，然后再加上5天即本年的第几天，特殊 　　　　　　情况，闰年且输入月份大于3时需考虑多加一天。 2.程序源代码： -Topic: enter a certain day, judgment day is the first few days this year? 1 program analysis: in March 5th, for example, it shou