查询某年某节气对应的日期用C语言写
时间: 2023-09-27 14:11:57 浏览: 120
好的,以下是一个用C语言查询某年某个节气对应的日期的示例代码,您可以参考:
```c
#include <stdio.h>
// 返回某年某个节气日期的儒略日数
double get_solar_term(int year, int term)
{
double term_days[24] = {0.0, 6.3825, 12.6788, 18.9980, 25.2392, 31.4414, 37.7446, 44.1391, 50.5371, 56.9364, 63.2875, 69.6393,
75.9384, 82.2281, 88.5331, 94.8350, 101.1406, 107.4340, 113.7347, 120.0250, 126.3210, 132.6222, 138.9175, 145.2078};
double base_days = 365.2422;
double century_days = 36525.0;
double year_days = base_days + (year - 2000) * 0.2422;
double term_days_1900 = term_days[term] - term_days[0];
double term_days_year = year_days + term_days_1900;
double term_days_century = century_days * (year - 1900) + 1.0;
double term_jd = 2451545.0 + term_days_century + term_days_year - 8.0 / 24.0;
return term_jd;
}
// 返回儒略日对应的公历日期
void jd_to_date(double jd, int *year, int *month, int *day)
{
int Z = jd + 0.5;
double F = jd + 0.5 - Z;
int A, B, C, D, E;
if (Z < 2299161)
{
A = Z;
}
else
{
int alpha = (int)((Z - 1867216.25) / 36524.25);
A = Z + 1 + alpha - alpha / 4;
}
B = A + 1524;
C = (int)((B - 122.1) / 365.25);
D = (int)(365.25 * C);
E = (int)((B - D) / 30.6001);
*day = B - D - (int)(30.6001 * E) + F;
*month = (E < 14) ? E - 1 : E - 13;
*year = (*month > 2) ? C - 4716 : C - 4715;
}
// 查询某年某个节气对应的日期
void get_solar_term_date(int year, char *term, char *date)
{
char *terms[24] = {"小寒", "大寒", "立春", "雨水", "惊蛰", "春分", "清明", "谷雨", "立夏", "小满", "芒种", "夏至",
"小暑", "大暑", "立秋", "处暑", "白露", "秋分", "寒露", "霜降", "立冬", "小雪", "大雪", "冬至"};
int i;
double term_jd = 0.0;
int term_year, term_month, term_day;
for (i = 0; i < 24; i++)
{
if (strcmp(term, terms[i]) == 0)
{
term_jd = get_solar_term(year, i);
break;
}
}
if (term_jd > 0.0)
{
jd_to_date(term_jd, &term_year, &term_month, &term_day);
sprintf(date, "%04d-%02d-%02d", term_year, term_month, term_day);
}
else
{
sprintf(date, "无效节气");
}
}
int main()
{
int year = 2021;
char *term = "冬至";
char date[11];
get_solar_term_date(year, term, date);
printf("%d年的%s是%s\n", year, term, date);
return 0;
}
```
在上面的代码中,我们先定义了一个 `get_solar_term()` 函数,该函数接受一个年份和节气编号,返回对应的儒略日数。然后定义了一个 `jd_to_date()` 函数,该函数接受一个儒略日数,返回对应的公历日期。最后定义了一个 `get_solar_term_date()` 函数,该函数接受一个年份和节气名称,返回对应的日期。在 `main()` 函数中,我们调用 `get_solar_term_date()` 函数,并输出结果。
希望这个示例代码可以帮助到您!