VC + + Gain system time, program run time (accurate to seconds, milliseconds) Five ways

1. Use the CTime class (get system current time, accurate to seconds)
CString str; // Get system Time CTime tm;tm=ctime::getcurrenttime (); // Gets the system date Str=tm. Format (" now time is%y year%m month%d day%x"); MessageBox (STR,NULL,MB_OK);
A, extracted from the Ctimet days and seconds
CTime T =ctime::getcurrenttime ();intD=t.getday ();//Get What 　 intY=t.getyear ();//Get year 　 intM=t.getmonth ();//Get Current Month 　 intH=t.gethour ();//gets the current when 　 intMm=t.getminute ();//Get minutes 　 intS=t.getsecond ();//Get seconds 　 intW=t.getdayofweek ();//get day of the week, note 1 for Sunday, 7 for Saturday
b, to calculate the difference between two periods of time, you can use the CTimeSpan class, using the following methods:
CTime T1 (1999,3, +, A, the,0 ); CTime T=Ctime::getcurrenttime (); CTimeSpan span=T-T1;//calculates the interval between the current system time and time T1intIday=span. GetDays ();//get how many days are there in this time intervalintIhour=span. Gettotalhours ();//get a total of how many hoursintImin=span. Gettotalminutes ();//get a total of how many minutesintIsec=span. Gettotalseconds ();//get how many seconds in total
C, gets the current date and time, and can be converted to CString
CTime tm=ctime::getcurrenttime (); CString str=TM. Format ("%y-%m-%d"); // Show Month Day
2. Use the Getlocaltime:windows API function to get the local current system date and time (accurate to milliseconds) This function stores the acquired system time information inside the SYSTEMTIME structure.
struct _systemtime{word wyear; // years WORD Wmonth; // Month WORD Wdayofweek; // Week: 0 for Sunday, 1 for Monday, 2 for Tuesday ... WORD wday; // Day WORD Whour; // when WORD Wminute; // points WORD Wsecond; // seconds WORD Wmilliseconds; // milliseconds } Systemtime,*psystemtime;
Cases:
SYSTEMTIME St; CString Strdate,strtime; Getlocaltime (&St); Strdate.format ("%4d-%2d-%2d", St.wyear, St.wmonth,st.wday); Strtime.format ("%2d:%2d:%2d", St.whour,st.wminute, St.wsecond); AfxMessageBox (strdate); AfxMessageBox (strtime);
3. Use GetTickCount: The number of milliseconds from the operating system boot to the current elapsed (elapsed), and its return value is DWORD. (Accurate to milliseconds)
//Get program run timeLongT1=gettickcount ();//System Run time (MS) before program section startsSleep ( -);LongT2=gettickcount ();();//System Run time (MS) after the end of the program segmentStr. Format ("Time:%dms", T2-T1);//the difference between the front and back is the program run timeAfxMessageBox (str);//Get system Run timeLongt=GetTickCount (); CString str,str1;str1. Format ("when the system is running%d", t/3600000); Str=str1;t%=3600000; str1. Format ("%d minutes", t/60000); Str+=str1;t%=60000; str1. Format ("%d seconds", t/ +); Str+=str1; AfxMessageBox (str);
4. Use time_t time (time_t * timer): Use only the C standard library (accurate to the second) to get the number of seconds from the standard chronograph (typically midnight January 1, 1970) to the current moment: Double Difftime (time_t timer1,  time_t timer0) struct TM *localtime (const time_t *timer); Get local time, localtime the resulting string returned by the structure TM can be formatted according to the following format:%a abbreviation for the day of the week. Eg:tue%A The full name of the week. Eg:tuesday the abbreviation for the%b month name. The full name of the%B month name. The%c local end datetime is a better representation of the string. %d numbers indicate the day ordinal of the month (range 00 to 31). Date%H A 24-hour number representing the number of hours (range 00 to 23). %I A 12-hour number indicates the number of hours (range 01 to 12). %j indicates the day of the Year in Numbers (range 001 to 366). Number of%m months (range from 1 to 12). %M minutes. %p indicates local time with ' AM ' or ' PM '. %s Number of seconds. The number of%u is expressed as the week of the current year, and the first one weeks start in Sunday. The%W number is expressed as the week of the current year, and the first one weeks start in Monday. %w numbers indicate the day of the week (0 is Sunday). %x does not include date notation for time. %x does not include a time representation of the date. The eg:15:26:30%y Two-digit number represents the year (range from 00 to 99). %Y a full year number representation, that is, four digits. eg:2008%Z (%Z) time zone or name abbreviation. Eg: Chinese standard Time percent% character. Contains: Years, months, days, weeks, hours, minutes, seconds, milliseconds. []http://blog.const.net.cn/a/16370.htm on the net of drinking small wine

VC + + Gain system time, program run time (accurate to seconds, milliseconds) Five ways