liangkuo-001/日历.cpp

#include<stdio.h>
#include<windows.h>
/*判断是否为闰年*/ 
int R(int year)
{
	if ((year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0))
		return 1;
	else
		return 0;
}
/*判断该月多少天*/ 
int max_day(int year, int month)
{
	int day[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
	if (R(year) == 1)
		day[1] = 29;
	return day[month - 1];
}
/*判断该天是这一年第几天*/ 
int total_day(int year, int month, int day)
{
	int sum = 0;
	int i = 1;
	for (i = 1; i < month; i++)
		sum += max_day(year, i);
	sum += day;
	return sum;
}
/*判断该天是星期几*/ 
int weekday(int year, int month, int day)
{
	int count;
	count = (year - 1) + (year - 1) / 4 - (year - 1) / 100 + (year - 1) / 400 + total_day(year, month, day);
	count %= 7;
	return count;
}
/*显示该天是星期几*/ 
void display_week(int year, int month, int day)
{
	int count;
	count = weekday(year, month, day);
	switch (count)
	{
	case 0:printf("\t%d年%d月%d日是星期天\n", year, month, day); break;
	case 1:printf("\t%d年%d月%d日是星期一\n", year, month, day); break;
	case 2:printf("\t%d年%d月%d日是星期二\n", year, month, day); break;
	case 3:printf("\t%d年%d月%d日是星期三\n", year, month, day); break;
	case 4:printf("\t%d年%d月%d日是星期四\n", year, month, day); break;
	case 5:printf("\t%d年%d月%d日是星期五\n", year, month, day); break;
	case 6:printf("\t%d年%d月%d日是星期六\n", year, month, day); break;
	}
}
/*展示月份表格*/ 
void display_month(int year, int month, int day)
{
	int i = 0, j = 1;
	int week, max;
	week = weekday(year, month, 1);
	max = max_day(year, month);
	printf("\n\t\t\t     **%d年%d月**",year,month);
	printf("\n");
	printf("\n\t日\t一\t二\t三\t四\t五\t六\n\n");
	for (i = 0; i < week; i++)
		printf("\t");
	for (j = 1; j <= max; j++)
	{
		printf("\t%d",j);
		if (i % 7 == 6)
			printf("\n\n");
		i++;
	}
	printf("\n\n");
}
/*判断是否为公历节日*/ 
void display_festival(int year,int month,int day)
{
	int ff;
	if(month==1&&day==1)ff=22;
	else if(month==2&&day==14)ff=1;
	else if(month==3&&day==8)ff=2;
	else if(month==3&&day==12)ff=3;
	else if(month==3&&day==15)ff=4;
	else if(month==4&&day==1)ff=5;
	else if(month==5&&day==1)ff=6;
	else if(month==5&&day==12)ff=7;
	else if(month==5&&day==31)ff=8;
	else if(month==6&&day==1)ff=9;
	else if(month==6&&day==5)ff=10;
	else if(month==6&&day==6)ff=11;
	else if(month==6&&day==26)ff=12;
	else if(month==7&&day==1)ff=13;
	else if(month==7&&day==7)ff=14;
	else if(month==8&&day==1)ff=15;
	else if(month==9&&day==10)ff=16;
	else if(month==9&&day==20)ff=17;
	else if(month==10&&day==1)ff=18;
	else if(month==11&&day==8)ff=19;
	else if(month==12&&day==1)ff=20;
	else if(month==12&&day==25)ff=21;
	else ff=0;
	switch(ff)
	{
		case 22:printf("\t%d年%d月%d日是元旦节\n", year, month, day); break;
		case 1:printf("\t%d年%d月%d日是情人节\n", year, month, day); break;
		case 2:printf("\t%d年%d月%d日是国际妇女节 \n", year, month, day); break;
		case 3:printf("\t%d年%d月%d日是中国植树节\n", year, month, day); break;
		case 4:printf("\t%d年%d月%d日是世界消费者权益日\n", year, month, day); break;
		case 5:printf("\t%d年%d月%d日是愚人节 \n", year, month, day); break;
		case 6:printf("\t%d年%d月%d日是劳动节\n", year, month, day); break;
		case 7:printf("\t%d年%d月%d日是国际护士节\n", year, month, day); break;
		case 8:printf("\t%d年%d月%d日是世界无烟日\n", year, month, day); break;
		case 9:printf("\t%d年%d月%d日是国际儿童节 \n", year, month, day); break;
		case 10:printf("\t%d年%d月%d日是世界环境日\n", year, month, day); break;
		case 11:printf("\t%d年%d月%d日是世界爱眼日\n", year, month, day); break;
		case 12:printf("\t%d年%d月%d日是国际禁毒日\n", year, month, day); break; 
		case 13:printf("\t%d年%d月%d日是中国共产党的生日\n", year, month, day); break;
		case 14:printf("\t%d年%d月%d日是中国抗日战争纪念日\n", year, month, day); break;
		case 15:printf("\t%d年%d月%d日是中国人民解放军建军纪念日\n", year, month, day); break;
		case 16:printf("\t%d年%d月%d日是中国教师节\n", year, month, day); break;
		case 17:printf("\t%d年%d月%d日是全国爱牙日\n", year, month, day); break;
		case 18:printf("\t%d年%d月%d日是中华人民共和国国庆节\n", year, month, day); break;
		case 19:printf("\t%d年%d月%d日是记者节\n", year, month, day); break;
		case 20:printf("\t%d年%d月%d日是全国艾滋病日\n", year, month, day); break;
		case 21:printf("\t%d年%d月%d日是圣诞节\n", year, month, day); break;
		default:printf("\t今天不是啥节日");break;
	}
}
/*判断是否这个日子已经过去*/ 
int rrr(int year, int month, int day)
{
	int qqq,www,eee,x;
	printf("今天是哪一天:");
	scanf("%d%d%d",&qqq,&www,&eee);
	if(qqq>year)		
		x=1;
	else if(qqq==year&&www>month)
		x=1;
	else if(qqq==year&&www==month&&eee>=day)
		x=1;
	else x=0;		
	switch(x)
		{
			case 0:printf("这一天是过去的一天\n") ;break;
			case 1:printf("这一天是未过去的一天\n");break; 
		}
	return 0;
}
/*主函数*/ 
int main()
{
	int year, month, day;
	printf("请输入你要查询的日期(yyyy-mm-dd)；");
	scanf("%d%d%d", &year, &month, &day);
	if (month<1||month>12||day<1||day>31)
	{
		printf("你输错了");
		return -1;
	}
	printf("        %d年%d月%d日是这一年的第%d天\n", year, month, day, total_day(year, month, day));
	display_week(year, month, day);
	display_festival(year,month,day);
	display_month(year, month, day);
	rrr(year, month, day); 
	system("pause");
	return 0;
}