#include <iostream>
#include <chrono>
#include <ctime>

void now()
{
     auto now = std::chrono::system_clock::now();
     std::time_t now_time = std::chrono::system_clock::to_time_t(now);
     std::cout << "now is: " << std::ctime(&now_time);
}
int main()
{
    now();

}