public static member function
<chrono>
static time_point now() noexcept;
获取当前时间
示例
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// system_clock::now
#include <iostream>
#include <ctime>
#include <ratio>
#include <chrono>
int main ()
{
using namespace std::chrono;
duration<int,std::ratio<60*60*24> > one_day (1);
system_clock::time_point today = system_clock::now();
system_clock::time_point tomorrow = today + one_day;
time_t tt;
tt = system_clock::to_time_t ( today );
std::cout << "today is: " << ctime(&tt);
tt = system_clock::to_time_t ( tomorrow );
std::cout << "tomorrow will be: " << ctime(&tt);
return 0;
}
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可能的输出
today is: Wed May 30 12:25:03 2012
tomorrow will be: Thu May 31 12:25:03 2012
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