公历转农历的方法

前段时间做软件写了个公历转农历的函数,目前公开给大家参考,有兴趣的朋友可以在此基础上进一步完善其功能

/*------------农历转换函数-----------*/
char *GetDayOf(PSYSTEMTIME pSt)
{
/*天干名称*/
const char *cTianGan[] = {"甲","乙","丙","丁","戊","己","庚","辛","壬","癸"};
/*地支名称*/
const char *cDiZhi[] = {"子","丑","寅","卯","辰","巳","午",
"未","申","酉","戌","亥"};
/*属相名称*/
const char *cShuXiang[] = {"鼠","牛","虎","兔","龙","蛇",
"马","羊","猴","鸡","狗","猪"};
/*农历日期名*/
const char *cDayName[] = {"*","初一","初二","初三","初四","初五",
"初六","初七","初八","初九","初十",
"十一","十二","十三","十四","十五",
"十六","十七","十八","十九","二十",
"廿一","廿二","廿三","廿四","廿五",
"廿六","廿七","廿八","廿九","三十"};
/*农历月份名*/
const char *cMonName[] = {"*","正","二","三","四","五","六",
"七","八","九","十","十一","腊"};

/*公历每月前面的天数*/
const int wMonthAdd[12] = {0,31,59,90,120,151,181,212,243,273,304,334};
/*农历数据*/
const int wNongliData[100] = {2635,333387,1701,1748,267701,694,2391,133423,1175,396438
,3402,3749,331177,1453,694,201326,2350,465197,3221,3402
,400202,2901,1386,267611,605,2349,137515,2709,464533,1738
,2901,330421,1242,2651,199255,1323,529706,3733,1706,398762
,2741,1206,267438,2647,1318,204070,3477,461653,1386,2413
,330077,1197,2637,268877,3365,531109,2900,2922,398042,2395
,1179,267415,2635,661067,1701,1748,398772,2742,2391,330031
,1175,1611,200010,3749,527717,1452,2742,332397,2350,3222
,268949,3402,3493,133973,1386,464219,605,2349,334123,2709
,2890,267946,2773,592565,1210,2651,395863,1323,2707,265877};
static int wCurYear,wCurMonth,wCurDay;
static int nTheDate,nIsEnd,m,k,n,i,nBit;
TCHAR szNongli[30], szNongliDay[10],szShuXiang[10];
/*---取当前公历年、月、日---*/
wCurYear = pSt->wYear;
wCurMonth = pSt->wMonth;
wCurDay = pSt->wDay;
/*---计算到初始时间1921年2月8日的天数：1921-2-8(正月初一)---*/
nTheDate = (wCurYear - 1921) * 365 + (wCurYear - 1921) / 4 + wCurDay + wMonthAdd[wCurMonth - 1] - 38;
if((!(wCurYear % 4)) && (wCurMonth > 2))
nTheDate = nTheDate + 1;

/*--计算农历天干、地支、月、日---*/
nIsEnd = 0;
m = 0;
while(nIsEnd != 1)
{
if(wNongliData[m] < 4095)
k = 11;
else
k = 12;
n = k;
while(n>=0)
{
//获取wNongliData(m)的第n个二进制位的值
nBit = wNongliData[m];
for(i=1;i<n+1;i++)
nBit = nBit/2;

nBit = nBit % 2;

if (nTheDate <= (29 + nBit))
{
nIsEnd = 1;
break;
}

nTheDate = nTheDate - 29 - nBit;
n = n - 1;
}
if(nIsEnd)
break;
m = m + 1;
}
wCurYear = 1921 + m;
wCurMonth = k - n + 1;
wCurDay = nTheDate;
if (k == 12)
{
if (wCurMonth == wNongliData[m] / 65536 + 1)
wCurMonth = 1 - wCurMonth;
else if (wCurMonth > wNongliData[m] / 65536 + 1)
wCurMonth = wCurMonth - 1;
}

/*--生成农历天干、地支、属相 ==> wNongli--*/
wsprintf(szShuXiang,"%s",cShuXiang[((wCurYear - 4) % 60) % 12]);
wsprintf(szNongli,"%s(%s%s)年",szShuXiang,cTianGan[((wCurYear - 4) % 60) % 10],cDiZhi[((wCurYear - 4) % 60) % 12]);

/*--生成农历月、日 ==> wNongliDay--*/
if (wCurMonth < 1)
wsprintf(szNongliDay,"闰%s",cMonName[-1 * wCurMonth]);
else
strcpy(szNongliDay,cMonName[wCurMonth]);

strcat(szNongliDay,"月");
strcat(szNongliDay,cDayName[wCurDay]);
return strcat(szNongli,szNongliDay);

}