C + + DateTime structure

Os:win7, tools:vs2015

DateTime.h

#pragmaOncestructdatetime{ Public: Unsigned year; //years since 1900Unsigned ShortMonth;//months since January-[0, one]Unsigned ShortDay;//Day of the month-[1]Unsigned ShortHour;//hours since midnight-[0, 23°c]Unsigned ShortMinute;//minutes after the hour-[0, +]Unsigned ShortSeconds;//seconds after the minute-[0, $] including leap second//unsigned short DayOfWeek;//Days since Sunday-[0, 6]//unsigned short dayofyear;//Days since January 1-[0, 365] Public:    //ctorDateTime (unsigned y, unsigned ShortM, unsigned ShortD, unsigned ShortH, unsigned ShortMI, unsigned Shorts); DateTime (); Public:    //is leapyear    BOOLisleapyear (); //Day of Week    Const Char*DayOfWeek (); /* Day of the year*/    intdayofyear (); Public:    //Start Elapsed    Static voidStart (); //End Elapsed, return Secs    Static DoubleEnd ();Private:    Const Char* _weekday_chs[7] = {"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};//Week of 中文版    Const Char* _weekday_eng[7] = {"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"};//Week of ChinesePrivate:    Const intdaysofmonth[ A] = { to, -, to, -, to, -, to, to, -, to, -, to};//Days of Month//const int* _daysofmonth = new int[12]{ , +,------------------Private:    //static variables must be initialized externally    Static LongElapsed; };

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DateTime.cpp

//localtime function#define_crt_secure_no_warnings#include<time.h>#include"DateTime.h"//Test#include <iostream>//Initializing static variablesLongdatetime::elapsed = NAN;//data loss warning ignored. DateTime::D atetime (unsigned y, unsigned ShortM, unsigned ShortD, unsigned ShortH, unsigned ShortMI, unsigned Shorts) { Year=y; Month=m; Day=D; Hour=h; Minute=mi; Seconds=s;} DateTime::D atetime () {//structure value from 19900月 to 0: Sunday, 1: Mondaytime_t DT; structtm*Now ; Time (&DT); now= LocalTime (&DT); /*out error time_t DT;    struct tm* now = {0};    Localtime_s (now, &DT); */ Year= Now->tm_year +1900; Month= Now->tm_mon +1; Day= now->Tm_mday; Hour= now->Tm_hour; Minute= now->tm_min; Seconds= now->tm_sec;}BOOLdatetime::isleapyear () {return(Year%4==0&& Year% -!=0) || (Year% -==0));}intDateTime::D ayofyear () {intTMP =0; //take array length    intLen = (sizeof(Daysofmonth)/sizeof(daysofmonth[0])); //Test//std::cout << len << Std::endl;     for(inti =0; I < Month-1; i++) {tmp+=Daysofmonth[i]; }    if(Isleapyear ()) TMP++; returnTMP +Day ;}Const Char*DateTime::D ayofweek () {/*//Method One: Caille formula, the division in the formula takes an integer.                    Symbolic Meaning: w: Week eg:{0= Sunday, 1 = Monday, ...} C: Number of years ago two eg:{2015 c=20} y: two bits eg:{2015 y=15} m: Month eg:{2015 year February 28 m=14, at this time y=2014} note      1, February to be treated as 13 of the previous year, 1 April calculation D: Day eg:{28 day d=28}①w= (y + y/4 + C/4-2*c + (m+1))/10 + d-1)%7    or ②w= (C/4-2*c + y + y/4 + (m+1)/5 + d-1)%7 unsigned w, c, Y, M, D;    c = year/100;    y = year% 100;    m = Month; if (Month = = 1 | |        Month = = 2) {y--;    M + = 12;    } d = Day;    W = (C/4-2 * C + y + Y/4 + (* (M + 1))/5 + d-1)% 7;    return _WEEKDAY_CHS[W]; */    /*//Method Two: Kimlarsson formula, the division in the formula takes the integer symbolic meaning: w: Week eg:{6= Sunday, 0 = Monday, ...} Y: Number of years eg:{2015 y=2015} m: Month eg:{2015 February 28 m=14, at this time y=2014} Note 1, February as 13 of the previous year, 1 April calculation D: Day    Eg:{28 Day d=28} w= (d + 2*m + (m+1)/5 + y + Y/4-y/100 + y/400)%7 unsigned w, y, M, D;    y = year;    m = Month; if (Month = = 1 | |        Month = = 2) {y--;    M + = 12;    } d = Day;    W = (d + 2 * m + 3 * (M + 1)/5 + y + Y/4-y/100 + y/400)% 7 +1;    Std::cout << W << Std::endl;    return _WEEKDAY_CHS[W]; */    /*//Method Three: Cardinal method, the division in the formula takes an integer 1. The annual radix YB: Common year = 1, Leap year = 2.  2. Monthly base MB: the sum of the number of days before the month (excluding the month) divided by 7 for Yu ping years ={0, 3, 3, 6, 1, 4, 6, 2, 5, 0, 3, 5}, Leap year ={0, 3, 4, 0, 2, 5, 0, 3,        6, 1, 4, 6}.            3. Symbolic Meaning: w: Week eg:{0= Sunday, 1 = Monday, ...} Y: Year eg:{2015 March 4 y=2015} YB: Year base eg:{2015 year March 4 yb=1} MB: Month base eg:{2015 year March 4 mb=3} d: Day eg:{ March 4, 2015 d=4} w= (y + y/4 + y/400-y/100-yb + MB + d)%7*/    intnly[ A] = {0,3,3,6,1,4,6,2,5,0,3,5 }; intly[ A] = {0,3,4,0,2,5,0,3,6,1,4,6 };    Unsigned y, YB, MB, D, W; if(Isleapyear ()) {YB=2; MB= Ly[month-1]; }    Else{YB=1; MB= Nly[month-1]; } y=Year ; D=Day ; W= (y + y/4+ Y/ --Y/ --YB + MB + d)%7; return_weekday_chs[w];}voidDatetime::start () {Elapsed=clock ();}DoubleDatetime::end () {//Test    /*Long tmp = Clock ()-Elapsed; Std::cout << tmp << Std::endl;*/    returnstatic_cast<Double> (Clock ()-Elapsed)/clocks_per_sec;}

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Main.cpp

#include <iostream>#include"DateTime.h"using namespacestd;intMain () {Datetime::start (); //Datetime::now (); //DateTime DT2 (1997, 3, 4,.);DateTime DT2; cout<< DT2. Year <<"years"<< DT2. Month <<"Month"<< DT2. Day <<"Day"<< DT2. Hour <<"when"<< DT2. Minute <<"points"<< DT2. Seconds <<"seconds"<<Endl; cout<< DT2. Isleapyear () <<Endl; cout<< DT2. DayOfYear () <<Endl; cout<< DT2. DayOfWeek () <<Endl; cout<< datetime::end () <<Endl;    GetChar (); return 0;}

C + + DateTime structure