万年历，实现公历，中国农历，显示星期-Calendar, to achieve the Gregorian calendar, Chinese New show week! !

一个简单的C万年历程序，可以查询任何年份月份的日历～-Calendar a simple C program, you can check the calendar month of any year-

这是一个使用C语言写的万年历程序，欢迎参考-It is a calendar program written in C language, please reference

天文算法万年历，基于寿星万年历js不完全移植，前后近一万年误差不超过一分钟(The astronomical calendar algorithm, the longevity of the calendar JS is not completely based on nearly ten thousand years before and after transplantation, the error is less than a minute)