Calendar/wudi.h

#include "yxt.h"
int getWeekDay(int year, int month, int day);
int daysBetweenGivenDateAndNow(int year,int month,int day);
int dijitian(int year,int month,int day);
int isLeapYear(int year);
int getDaysInMonth(int year, int month);
int calculateTotalDays(int year, int month, int day);
void wang(int year,int month,int day)
{
    int result ;
    result = isHoliday(year, month, day);
    switch (result)
    {
        case 1:
            printf("元旦\n");
            break;
        case 2:
            printf("中国人民警察节\n");
            break;
        case 3:
            printf("妇女节\n");
            break;
        case 4:
            printf("植树节\n");
            break;
        case 5:
            printf("清明节\n");
            break;
        case 6:
            printf("劳动节\n");
            break;
        case 7:
            printf("青年节\n");
            break;
        case 8:
            printf("护士节\n");
            break;
        case 9:
            printf("全国科技工作者日\n");
            break;
        case 10:
            printf("儿童节\n");
            break;
        case 11:
            printf("中国人民解放军建军节\n");
            break;
        case 12:
            printf("中国医师节\n");
            break;
        case 13:
            printf("教师节\n");
            break;
        case 14:
            printf("国庆节\n");
            break;
        case 15:
            printf("记者节\n");
            break;
        case 16:
            printf("二七纪念日\n");
            break;
        case 17:
            printf("全民国家安全教育日\n");
            break;
        case 18:
            printf("中国航天日\n");
            break;
        case 19:
            printf("中国品牌日\n");
            break;
        case 20:
            printf("全民防灾减灾日\n");
            break;
        case 21:
            printf("中国旅游日\n");
            break;
        case 22:
            printf("中国助残日\n");
            break;
        case 23:
            printf("五州纪念日\n");
            break;
        case 24:
            printf("环境日\n");
            break;
        case 25:
            printf("文化和自然遗产日\n");
            break;
        case 26:
            printf("全国土地日\n");
            break;
        case 27:
            printf("七七抗战纪念日\n");
            break;
        case 28:
            printf("中国航海日\n");
            break;
        case 29:
            printf("全名健身日\n");
            break;
        case 30:
            printf("全民生态日\n");
            break;
        case 31:
            printf("残疾预防日\n");
            break;
        case 32:
            printf("中国人民抗日战争胜利纪念日\n");
            break;
        case 33:
            printf("中华慈善日\n");
            break;
        case 34:
            printf("九一八纪念日\n");
            break;
        case 35:
            printf("全民国防教育日\n");
            break;
        case 36:
            printf("烈士纪念日\n");
            break;
        case 37:
            printf("国家扶贫日\n");
            break;
        case 38:
            printf("全国交通安全日\n");
            break;
        case 39:
            printf("国家宪法日和全国法制宣传日\n");
            break;
        case 41:
            printf("南京大屠杀死难者国家公祭日\n");
            break;
        case 42:
        	printf("圣诞节\n");
        	break;
        case 0:
            printf("该日期不是节假日\n");
            break;
        default:
            printf("未知的节日\n");
            break;
    }
    
}
int dijitian(int year,int month,int day)
{
    int a[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    int sumdays = 0;

   
    //判断是否为闰年
    if ((year % 4 == 0 && year % 100!= 0) || year % 400 == 0) {
        a[1] = 29;
    }

    // 检查输入的日期是否合法
    if (month < 1 || month > 12 || day < 1 || (day >a[month - 1])) {
        printf("输入的日期不合法\n");
        return -1;
    }


    // 计算总天数
    int i=0;
    while( i < month - 1)
	{
        sumdays += a[i];
        i++;
    }
    
    printf("%d年%d月%d日是该年的第%d天。\n", year, month, day, sumdays);

    return sumdays;
}

// 判断是否为闰年，闰年返回1，平年返回0
int isLeapYear(int year) {
    return ((year % 4 == 0 && year % 100!= 0) || year % 400 == 0);
}

// 获取对应月份的天数
int getDaysInMonth(int year, int month) {
    int days[] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
    if (month == 2 && isLeapYear(year)) {
        return 29;
    }
    return days[month];
}

// 计算从公元1年1月1日到给定日期的总天数
int calculateTotalDays(int year, int month, int day) {
    int totalDays = 0;
    int y,m;
    for ( y = 1; y < year; y++) {
        totalDays += isLeapYear(y)? 366 : 365;
    }
    for ( m = 1; m < month; m++) {
        totalDays += getDaysInMonth(year, m);
    }
    totalDays += day;
    return totalDays;
}

// 计算给定日期与当前日期的天数差
int daysBetweenGivenDateAndNow(int year, int month, int day) {
    time_t currentTime;
    struct tm* currentDate;
    time(&currentTime);
    currentDate = localtime(&currentTime);

    int currentYear = currentDate->tm_year + 1900;
    int currentMonth = currentDate->tm_mon + 1;
    int currentDay = currentDate->tm_mday;

    int totalDaysGiven = calculateTotalDays(year, month, day);
    int totalDaysCurrent = calculateTotalDays(currentYear, currentMonth, currentDay);

    return totalDaysCurrent - totalDaysGiven;
}