update all

.gitignore

@@ -1,2 +1,2 @@
-日记
+Diary
 .obsidian

Article/Technology/test.md

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+[所有 - 滴答清单](https://dida365.com/webapp/#q/all/tasks)

Article/Template/Diary.md

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+
+# preface
+---
+**今天是{{date:YYYY}}年的第{{date:DDD}}天、第{{date:wo}}周！**  
+**天气：**  
+**地点：**  
+# summary
+---
+**完成了什么？遇到了什么问题？解决方案是什么？**
+
+
+
+# 随想
+---
+**任何想法、感悟、反思、碎片记录...**
+
+
+
+# afterword
+---

Article/YueQian/Code/Mycode/TianShuJiSuan.c

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+#include <stdio.h>
+
+// 基准日期：2004年5月2日（星期日）
+#define BASE_YEAR 2004
+#define BASE_MONTH 5
+#define BASE_DAY 2
+
+// 闰年判断：是闰年返回1，否则返回0
+int is_leap_year(int year)
+{
+    return (year % 4 == 0 && year % 100 != 0) || (year % 400 == 0);
+}
+
+// 获取指定年份和月份的天数
+int get_month_days(int year, int month)
+{
+    int month_days[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+    if (month == 2 && is_leap_year(year))
+    {
+        return 29;
+    }
+    return month_days[month];
+}
+
+// 计算从"年1月1日"到"年-月-日"的总天数
+int days_from_year_start(int year, int month, int day)
+{
+    int total = 0;
+    for (int m = 1; m < month; m++)
+    {
+        total += get_month_days(year, m);
+    }
+    total += day;
+    return total;
+}
+
+// 计算两个日期之间的天数差（date2 - date1，date2需晚于date1）
+int calculate_days_diff(int year1, int month1, int day1, 
+                        int year2, int month2, int day2)
+{
+    int diff = 0;
+
+    // 同年直接相减
+    if (year1 == year2)
+    {
+        int days_to_date1 = days_from_year_start(year1, month1, day1);
+        int days_to_date2 = days_from_year_start(year2, month2, day2);
+        return days_to_date2 - days_to_date1;
+    }
+
+    // 不同年：分段计算
+    int total_days_year1 = is_leap_year(year1) ? 366 : 365;
+    int days_to_date1 = days_from_year_start(year1, month1, day1);
+    int days_left_in_year1 = total_days_year1 - days_to_date1;
+
+    for (int y = year1 + 1; y < year2; y++)
+    {
+        diff += is_leap_year(y) ? 366 : 365;
+    }
+
+    int days_to_date2 = days_from_year_start(year2, month2, day2);
+    diff += days_left_in_year1 + days_to_date2;
+
+    return diff;
+}
+
+int zeller_calc_weekday(int year, int month, int day)
+{
+    int y, c, m, d;
+    if (month < 3)
+    {
+        m = month + 12;
+        y = year - 1;
+    }
+    else
+    {
+        m = month;
+        y = year;
+    }
+    c = y / 100;
+    y = y % 100;
+    d = day;
+
+    int w = (y + y/4 + c/4 - 2*c + (26*(m+1))/10 + d - 1) % 7;
+    if (w < 0)
+        w += 7;
+    
+    w = w % 7;
+    return w;
+}
+
+int main(void)
+{
+    int target_year, target_month, target_day;
+    // 星期映射表：索引0=星期日，1=星期一...6=星期六
+    char *weekdays[] = {"星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"};
+    
+    while(1)
+    {
+        printf("依次输入 年 月 日（需晚于%d年%d月%d日）：", BASE_YEAR, BASE_MONTH, BASE_DAY);
+        scanf("%d%d%d", &target_year, &target_month, &target_day);
+
+        // 输入合法性校验
+        if (target_year < BASE_YEAR)
+        {
+            printf("年份应在%d年及之后！\n", BASE_YEAR);
+            continue;
+        }
+        if (target_month < 1 || target_month > 12)
+        {
+            printf("月份输入错误，请输入1-12之间的数字！\n");
+            continue;
+        }
+        int days_of_month = get_month_days(target_year, target_month);
+        if (target_day < 1 || target_day > days_of_month)
+        {
+            printf("%d年%d月没有%d日！\n", target_year, target_month, target_day);
+            continue;
+        }
+        if (target_year == BASE_YEAR)
+        {
+            if (target_month < BASE_MONTH || 
+                (target_month == BASE_MONTH && target_day < BASE_DAY))
+            {
+                printf("日期需晚于%d年%d月%d日！\n", BASE_YEAR, BASE_MONTH, BASE_DAY);
+                continue;
+            }
+        }
+
+        // 计算天数差
+        int total_days = calculate_days_diff(BASE_YEAR, BASE_MONTH, BASE_DAY,
+                                            target_year, target_month, target_day);
+        
+        // 用蔡勒公式计算星期几
+        int weekday = zeller_calc_weekday(target_year, target_month, target_day);
+
+        // 输出结果
+        printf("%d年%d月%d日，距%d年%d月%d日共%d天\n", 
+               target_year, target_month, target_day,
+               BASE_YEAR, BASE_MONTH, BASE_DAY, total_days);
+        // 显示星期几
+        printf("%d年%d月%d日 是 %s\n", target_year, target_month, target_day, weekdays[weekday]);
+
+        printf("------------------------------------------------------\n");
+    }
+        
+    return 0;
+}