Use boost to get time and format

Using boost to get the current time is quick and easy, and you don't have to think about cross-platform issues.

1. Output YYYYMMDD

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1. #include <boost/date_time/gregorian/gregorian.hpp>
2. #define Boost_date_time_source
4. std::string strtime = boost::gregorian::to_iso_string (\
5. Boost::gregorian::d ay_clock::local_day ());
7. Std::cout << strtime.c_str () << Std::endl;

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1. #include <boost/date_time/gregorian/gregorian.hpp>
2. #define Boost_date_time_source
4. std::string strtime = boost::gregorian::to_iso_string (\
5. Boost::gregorian::d ay_clock::local_day ());
7. Std::cout << strtime.c_str () << Std::endl;

2. Output Yyyymmdd-hh:mm:ss

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2. #include <boost/date_time/posix_time/posix_time.hpp>
4. #define Boost_date_time_source
8. std::string strtime = boost::p osix_time::to_iso_string (\
10. Boost::p osix_time::second_clock::local_time ());
14. At this time, the format of the strtime is YYYYMMDDTHHMMSS, and the date and time are separated by the capital letter T.
18. int pos = strtime.find (' T ');
20. Strtime.replace (pos,1,std::string ("-"));
22. Strtime.replace (pos + 3,0,std::string (":"));
24. Strtime.replace (pos + 6,0,std::string (":"));
28. Std::cout << strtime.c_str () << Std::endl;

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2. #include <boost/date_time/posix_time/posix_time.hpp>
4. #define Boost_date_time_source
8. std::string strtime = boost::p osix_time::to_iso_string (\
10. Boost::p osix_time::second_clock::local_time ());
14. At this time, the format of the strtime is YYYYMMDDTHHMMSS, and the date and time are separated by the capital letter T.
18. int pos = strtime.find (' T ');
20. Strtime.replace (pos,1,std::string ("-"));
22. Strtime.replace (pos + 3,0,std::string (":"));
24. Strtime.replace (pos + 6,0,std::string (":"));
28. Std::cout << strtime.c_str () << Std::endl;

3. Calculate the time interval. The ability to calculate time intervals in boost is a lot more powerful, and I'm just listing what I'm using right now.

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2. #include <boost/date_time/posix_time/posix_time.hpp>
4. #include <boost/thread.hpp>
6. #define Boost_date_time_source
10. Boost::p osix_time::p time Time_now,time_now1;
12. Boost::p Osix_time::millisec_posix_time_system_config::time_duration_type time_elapse;
16. This is in microseconds, where microsec_clock can be replaced by second_clock in seconds;
18. Time_now = boost::p osix_time::microsec_clock::universal_time ();
22. Sleep 100 milliseconds;
24. Boost::this_thread::sleep (boost::p osix_time::millisec (100));
28. Time_now1 = boost::p osix_time::microsec_clock::universal_time ();
32. Time_elapse = Time_now1-time_now;
36. Similar to the GetTickCount, only this side gets the difference of the ticket value of 2 time, in microseconds units;
38. int ticks = Time_elapse.ticks ();
42. The number of seconds to get two time intervals;
44. int sec = Time_elapse.total_seconds ();

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2. #include <boost/date_time/posix_time/posix_time.hpp>
4. #include <boost/thread.hpp>
6. #define Boost_date_time_source
10. Boost::p osix_time::p time Time_now,time_now1;
12. Boost::p Osix_time::millisec_posix_time_system_config::time_duration_type time_elapse;
16. This is in microseconds, where microsec_clock can be replaced by second_clock in seconds;
18. Time_now = boost::p osix_time::microsec_clock::universal_time ();
22. Sleep 100 milliseconds;
24. Boost::this_thread::sleep (boost::p osix_time::millisec (100));
28. Time_now1 = boost::p osix_time::microsec_clock::universal_time ();
32. Time_elapse = Time_now1-time_now;
36. Similar to the GetTickCount, only this side gets the difference of the ticket value of 2 time, in microseconds units;
38. int ticks = Time_elapse.ticks ();
42. Get two seconds in a time interval

Use boost to get time and format