...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
//Some simple examples of constructing and calculating with times //Output: //2002-Feb-01 00:00:00 - 2002-Feb-01 05:04:02.001000000 = -5:04:02.001000000 #include "boost/date_time/posix_time/posix_time.hpp" #include <iostream> int main() { using namespace boost::posix_time; using namespace boost::gregorian; date d(2002,Feb,1); //an arbitrary date //construct a time by adding up some durations durations ptime t1(d, hours(5)+minutes(4)+seconds(2)+millisec(1)); //construct a new time by subtracting some times ptime t2 = t1 - hours(5)- minutes(4)- seconds(2)- millisec(1); //construct a duration by taking the difference between times time_duration td = t2 - t1; std::cout << to_simple_string(t2) << " - " << to_simple_string(t1) << " = " << to_simple_string(td) << std::endl; return 0; }