之前要做一个万年历，从论坛上辗转多处，最终发现以下这个阳历转换阴历的程序比较简单，数据带入可以直接使用，不过测试发现转换有问题，后面进行仿真调试找到问题所在，从而进而修改。不知道是我复制出错，还是自己不经意间修改才导致问题出现，已经修复，需要阳历转阴历的可以拿去。找不到具体来源，因此无法标志引用链接地址，如有侵权，联系删除。
问题所在：在SPDATE GetSpringDay(uchar GreYear,uchar GreMon,uchar GreDay)函数里面的参数定义，把Offset1定义为uchar类型，后面计算时Offset1数值溢出，将uchar改为uint后，数据不在溢出，进行上机测试，转换成功。

//公曆轉農曆(1901-2100)

//亦木明 2008.1.11

//2018.12.30清枫城主测试，发现存在问题，通过仿真一步步走找出问题所在，并作出修正

//原文在哪忘了，只知道作者有“亦木明”的标注，如有侵权联系删除

#include "12c5a60s2.h"//可修改为51的头文件   

#define TRUE  1

//公历年对应的农历数据,每年三字节,

//格式第一字节BIT7-4 位表示闰月月份,值为0 为无闰月,BIT3-0 对应农历第1-4 月的大小

//第二字节BIT7-0 对应农历第5-12 月大小,第三字节BIT7 表示农历第13 个月大小

//月份对应的位为1 表示本农历月大(30 天),为0 表示小(29 天).

//第三字节BIT6-5 表示春节的公历月份,BIT4-0 表示春节的公历日期

//每年的數據對應在數組中的位置庫 (200-(2100-year)-1)*3+Offset1  

//0x09,0x2d,0x47, //2008  0x47 01000111

//0x4d,0x4A,0xB8, //2001

typedef struct spdate

{

        char         cYear;

        char        cMon;

        char        cDay;

}SPDATE;

uchar code Data[]={

0x04,0xAe,0x53, //1901  0        (200-(2100-1901)-1)*3=0

0x0A,0x57,0x48, //1902        3   (200-(2100-1902)-1)*3=3

0x55,0x26,0xBd, //1903        6        (200-(2100-1903)-1)*3=3

0x0d,0x26,0x50, //1904        9   (200-(2100-year)-1)*3 

0x0d,0x95,0x44, //1905        12        

0x46,0xAA,0xB9, //1906        15

0x05,0x6A,0x4d, //1907

0x09,0xAd,0x42, //1908

0x24,0xAe,0xB6, //1909

0x04,0xAe,0x4A, //1910

0x6A,0x4d,0xBe, //1911

0x0A,0x4d,0x52, //1912

0x0d,0x25,0x46, //1913

0x5d,0x52,0xBA, //1914

0x0B,0x54,0x4e, //1915

0x0d,0x6A,0x43, //1916

0x29,0x6d,0x37, //1917

0x09,0x5B,0x4B, //1918

0x74,0x9B,0xC1, //1919

0x04,0x97,0x54, //1920

0x0A,0x4B,0x48, //1921

0x5B,0x25,0xBC, //1922

0x06,0xA5,0x50, //1923

0x06,0xd4,0x45, //1924

0x4A,0xdA,0xB8, //1925

0x02,0xB6,0x4d, //1926

0x09,0x57,0x42, //1927

0x24,0x97,0xB7, //1928

0x04,0x97,0x4A, //1929

0x66,0x4B,0x3e, //1930

0x0d,0x4A,0x51, //1931

0x0e,0xA5,0x46, //1932

0x56,0xd4,0xBA, //1933

0x05,0xAd,0x4e, //1934

0x02,0xB6,0x44, //1935

0x39,0x37,0x38, //1936

0x09,0x2e,0x4B, //1937

0x7C,0x96,0xBf, //1938

0x0C,0x95,0x53, //1939

0x0d,0x4A,0x48, //1940

0x6d,0xA5,0x3B, //1941

0x0B,0x55,0x4f, //1942

0x05,0x6A,0x45, //1943

0x4A,0xAd,0xB9, //1944

0x02,0x5d,0x4d, //1945

0x09,0x2d,0x42, //1946

0x2C,0x95,0xB6, //1947

0x0A,0x95,0x4A, //1948

0x7B,0x4A,0xBd, //1949

0x06,0xCA,0x51, //1950

0x0B,0x55,0x46, //1951

0x55,0x5A,0xBB, //1952

0x04,0xdA,0x4e, //1953

0x0A,0x5B,0x43, //1954

0x35,0x2B,0xB8, //1955

0x05,0x2B,0x4C, //1956

0x8A,0x95,0x3f, //1957

0x0e,0x95,0x52, //1958

0x06,0xAA,0x48, //1959

0x7A,0xd5,0x3C, //1960

0x0A,0xB5,0x4f, //1961

0x04,0xB6,0x45, //1962

0x4A,0x57,0x39, //1963

0x0A,0x57,0x4d, //1964

0x05,0x26,0x42, //1965

0x3e,0x93,0x35, //1966

0x0d,0x95,0x49, //1967

0x75,0xAA,0xBe, //1968

0x05,0x6A,0x51, //1969

0x09,0x6d,0x46, //1970

0x54,0xAe,0xBB, //1971

0x04,0xAd,0x4f, //1972

0x0A,0x4d,0x43, //1973

0x4d,0x26,0xB7, //1974

0x0d,0x25,0x4B, //1975

0x8d,0x52,0xBf, //1976

0x0B,0x54,0x52, //1977

0x0B,0x6A,0x47, //1978

0x69,0x6d,0x3C, //1979

0x09,0x5B,0x50, //1980

0x04,0x9B,0x45, //1981

0x4A,0x4B,0xB9, //1982

0x0A,0x4B,0x4d, //1983

0xAB,0x25,0xC2, //1984

0x06,0xA5,0x54, //1985

0x06,0xd4,0x49, //1986

0x6A,0xdA,0x3d, //1987

0x0A,0xB6,0x51, //1988

0x09,0x37,0x46, //1989

0x54,0x97,0xBB, //1990

0x04,0x97,0x4f, //1991

0x06,0x4B,0x44, //1992

0x36,0xA5,0x37, //1993

0x0e,0xA5,0x4A, //1994

0x86,0xB2,0xBf, //1995

0x05,0xAC,0x53, //1996

0x0A,0xB6,0x47, //1997

0x59,0x36,0xBC, //1998

0x09,0x2e,0x50, //1999         

0x0C,0x96,0x45, //2000

0x4d,0x4A,0xB8, //2001

0x0d,0x4A,0x4C, //2002

0x0d,0xA5,0x41, //2003

0x25,0xAA,0xB6, //2004

0x05,0x6A,0x49, //2005

0x7A,0xAd,0xBd, //2006

0x02,0x5d,0x52, //2007

0x09,0x2d,0x47, //2008

0x5C,0x95,0xBA, //2009

0x0A,0x95,0x4e, //2010

0x0B,0x4A,0x43, //2011

0x4B,0x55,0x37, //2012

0x0A,0xd5,0x4A, //2013

0x95,0x5A,0xBf, //2014

0x04,0xBA,0x53, //2015

0x0A,0x5B,0x48, //2016

0x65,0x2B,0xBC, //2017

0x05,0x2B,0x50, //2018

0x0A,0x93,0x45, //2019

0x47,0x4A,0xB9, //2020

0x06,0xAA,0x4C, //2021

0x0A,0xd5,0x41, //2022

0x24,0xdA,0xB6, //2023

0x04,0xB6,0x4A, //2024

0x69,0x57,0x3d, //2025

0x0A,0x4e,0x51, //2026

0x0d,0x26,0x46, //2027

0x5e,0x93,0x3A, //2028

0x0d,0x53,0x4d, //2029

0x05,0xAA,0x43, //2030

0x36,0xB5,0x37, //2031

0x09,0x6d,0x4B, //2032

0xB4,0xAe,0xBf, //2033

0x04,0xAd,0x53, //2034

0x0A,0x4d,0x48, //2035

0x6d,0x25,0xBC, //2036

0x0d,0x25,0x4f, //2037

0x0d,0x52,0x44, //2038

0x5d,0xAA,0x38, //2039

0x0B,0x5A,0x4C, //2040

0x05,0x6d,0x41, //2041

0x24,0xAd,0xB6, //2042

0x04,0x9B,0x4A, //2043

0x7A,0x4B,0xBe, //2044

0x0A,0x4B,0x51, //2045

0x0A,0xA5,0x46, //2046

0x5B,0x52,0xBA, //2047

0x06,0xd2,0x4e, //2048

0x0A,0xdA,0x42, //2049

0x35,0x5B,0x37, //2050

0x09,0x37,0x4B, //2051

0x84,0x97,0xC1, //2052

0x04,0x97,0x53, //2053

0x06,0x4B,0x48, //2054

0x66,0xA5,0x3C, //2055

0x0e,0xA5,0x4f, //2056

0x06,0xB2,0x44, //2057

0x4A,0xB6,0x38, //2058

0x0A,0xAe,0x4C, //2059

0x09,0x2e,0x42, //2060

0x3C,0x97,0x35, //2061

0x0C,0x96,0x49, //2062

0x7d,0x4A,0xBd, //2063

0x0d,0x4A,0x51, //2064

0x0d,0xA5,0x45, //2065

0x55,0xAA,0xBA, //2066

0x05,0x6A,0x4e, //2067

0x0A,0x6d,0x43, //2068

0x45,0x2e,0xB7, //2069

0x05,0x2d,0x4B, //2070

0x8A,0x95,0xBf, //2071

0x0A,0x95,0x53, //2072

0x0B,0x4A,0x47, //2073

0x6B,0x55,0x3B, //2074

0x0A,0xd5,0x4f, //2075

0x05,0x5A,0x45, //2076

0x4A,0x5d,0x38, //2077

0x0A,0x5B,0x4C, //2078

0x05,0x2B,0x42, //2079

0x3A,0x93,0xB6, //2080

0x06,0x93,0x49, //2081

0x77,0x29,0xBd, //2082

0x06,0xAA,0x51, //2083

0x0A,0xd5,0x46, //2084

0x54,0xdA,0xBA, //2085

0x04,0xB6,0x4e, //2086

0x0A,0x57,0x43, //2087

0x45,0x27,0x38, //2088

0x0d,0x26,0x4A, //2089

0x8e,0x93,0x3e, //2090

0x0d,0x52,0x52, //2091

0x0d,0xAA,0x47, //2092

0x66,0xB5,0x3B, //2093

0x05,0x6d,0x4f, //2094

0x04,0xAe,0x45, //2095

0x4A,0x4e,0xB9, //2096

0x0A,0x4d,0x4C, //2097

0x0d,0x15,0x41, //2098

0x2d,0x92,0xB5, //2099

0x0d,0x53,0x49, //2100

};

uchar code Mon1[2][13]={0,31,28,31,30,31,30,31,31,30,31,30,31,

                                  0,31,29,31,30,31,30,31,31,30,31,30,31};

SPDATE Spdate;

//獲得當年春節的公曆日期

SPDATE GetSpringDay(uchar GreYear,uchar GreMon,uchar GreDay)

{

        //0x09,0x2d,0x47, //2008  0x47 01000111 

        int day;

    uchar i,Flag,F;

        uint Offset1;//出现问题在这里，原本定义为uchar类型，下面计算时超出范围导致错误，进行修改为uint类型后，验证正常

        unsigned char L=0x01,Flag1=1;

        unsigned int  Temp16,L1=0x0800;

        //第三字节BIT6-5 表示春节的公历月份,BIT4-0 表示春节的公历日期

        Spdate.cYear=GreYear ;

        Spdate.cMon=(Data[(200-(100-GreYear)-1)*3+2]&0x60)>>5; //计算春节公历月份

        Spdate.cDay=(Data[(200-(100-GreYear)-1)*3+2])&0x1f;    //计算春节公历日期

        //判断平年，闰年

        if( (!(GreYear%4) && (GreYear%100)) || !(GreYear%400) ) Flag=1; 

        else Flag=0;

        if(Spdate.cMon>GreMon)                                                                //春节离公历日期的天数

        {

           day=Mon1[Flag][GreMon]-GreDay;

           for(i=GreMon+1;i<=Spdate.cMon-1;i++)

                        day+=Mon1[Flag][i];

           day+=Spdate.cDay;

           F=1;

        }

        else if(Spdate.cMon

        {

                day=Mon1[Flag][Spdate.cMon]-Spdate.cDay;  

                for(i=Spdate.cMon+1;i<=GreMon-1;i++)

                        day+=Mon1[Flag][i];

                day+=GreDay;                                //          000000000000000000000000000000000000000000000000000000000000000000

                F=0;

        }

        else

        {

                if(Spdate.cDay>GreDay)

                {

                        day=Spdate.cDay-GreDay;