C语言完成的一个万年历小程序（附代码）

微信小程序，简称小程序，英文名Mini Program，是一种不需要下载安装即可使用的应用，它实现了应用“触手可及”的梦想，用户扫一扫或搜一下即可打开应用。小程序是一种不用下载就能使用的应用，也是一项门槛非常高的创新，经过将近两年的发展，已经构造了新的小程序开发环境和开发者生态。

这篇文章主要介绍了C语言实现的一个万年历小程序,相对简单,做C语言日期计算的朋友可以参考下

该程序简单地输入一个年份（1901年之后的年份），随后程序输出该年份十二个月的日历。

#include<stdio.h>

#define Mon   1
#define Tues  2
#define Wed   3
#define Thur  4
#define Fri   5
#define Sat   6
#define Sun   0

#define January_days   31
#define February_days   28
#define March_days    31
#define April_days    30
#define May_days     31
#define June_days     30
#define July_days     31
#define August_days    31
#define September_days  30
#define October_days   31
#define November_days   30
#define December_days   31

#define first1month January_days
#define first2month January_days+February_days
#define first3month January_days+February_days+March_days
#define first4month January_days+February_days+March_days+April_days
#define first5month January_days+February_days+March_days+April_days+May_days
#define first6month January_days+February_days+March_days+April_days+May_days+June_days
#define first7month January_days+February_days+March_days+April_days+May_days+June_days \
	         +July_days
#define first8month January_days+February_days+March_days+April_days+May_days+June_days \
	         +July_days+August_days
#define first9month January_days+February_days+March_days+April_days+May_days+June_days \
	         +July_days+August_days+September_days
#define first10month January_days+February_days+March_days+April_days+May_days+June_days \
	         +July_days+August_days+September_days+October_days
#define first11month January_days+February_days+March_days+April_days+May_days+June_days \
	         +July_days+August_days+September_days+October_days+November_days

int known_weekday = Tues;
int known_year = 1901;
int konwn_month = 1;
int known_day = 1;

int day_count(int month)
{	
	switch(month)
	{
		case 1: return 0;break;
		case 2: return first1month;break;
		case 3: return first2month;break;
		case 4: return first3month;break;
		case 5: return first4month;break;
		case 6: return first5month;break;
		case 7: return first6month;break;
		case 8: return first7month;break;
		case 9: return first8month;break;
		case 10: return first9month;break;
		case 11: return first10month;break;
		case 12: return first11month;break;
	}
}


/*char * month_name(int month)
{
	switch(month)
	{
		case 1:
			return "January";
			break;
		case 2:
			return "February";
			break;
		case 3:
			return "March";
			break;
		case 4:
			return "April";
			break;
		case 5:
			return "May";
			break;
		case 6:
			return "June";
			break;
		case 7:
			return "July";
			break;
		case 8:
			return "August";
			break;
		case 9:
			return "September";
			break;
		case 10:
			return "October";
			break;
		case 11:
			return "November";
			break;
		case 12:
			return "December";
			break;
		default:
			break;
	}
}*/

char * month_name(int month)
{
	switch(month)
	{
		case 1:
			return "一月";
			break;
		case 2:
			return "二月";
			break;
		case 3:
			return "三月";
			break;
		case 4:
			return "四月";
			break;
		case 5:
			return "五月";
			break;
		case 6:
			return "六月";
			break;
		case 7:
			return "七月";
			break;
		case 8:
			return "八月";
			break;
		case 9:
			return "九月";
			break;
		case 10:
			return "十月";
			break;
		case 11:
			return "十一月";
			break;
		case 12:
			return "十二月";
			break;
		default:
			break;
	}
}

/*按格式打印某年某月名称*/
void first_line_print(int month, int year)
{
	//printf("%20s %d \n",month_name(month),year);
	printf("%8d年 %s \n",year, month_name(month));
}

/*按格式打印星期名称*/
void week_print()
{
	//printf("%-6s%-6s%-6s%-6s%-6s%-6s%-6s\n","Sun.", "Mon.", "Tues.", "Wed.", "Thur.", "Fri.", "Sat.");
	printf("%-3s%-3s%-3s%-3s%-3s%-3s%-3s\n","日", "一", "二", "三", "四", "五", "六");
}

/*计算该年该月份与已知日子之间的距离天数*/
int date_distance_count(int month, int year)
{
	int leap_year_count = 0;
	int i;
	int distance;

	if (year > known_year)
	{
		for (i=known_year; i<year; i++)
		{
			if(((i%4 == 0) && (i%100 != 0) )   关键词：C语言完成的一个万年历小程序（附代码）