C++当前日期和时间

#include <iostream>
#include <ctime>

using namespace std;

int main() {
   // current date/time based on current system
   time_t Now = time(0);

   // convert Now to string form
   char* dt = ctime(&Now);

   cout << "The local date and time is: " << dt << endl;

   // convert Now to tm struct for UTC
   tm *gmtm = gmtime(&Now);
   dt = asctime(gmtm);
   cout << "The UTC date and time is:"<< dt << endl;
}