#include <iostream> // std::cout
#include <iomanip> // std::put_time
#include <ctime> // std::time_t, struct std::tm, std::localtime
#include <chrono> // std::chrono::system_clock
#include <string> // std::string
int main(int argc, char const *argv[])
{
std::time_t tt = std::chrono::system_clock::to_time_t (std::chrono::system_clock::now());
struct std::tm * ptm = std::localtime(&tt);
std::cout << "Now (local time): " << std::put_time(ptm,"%c") << std::endl;
std::string timeStamp = std::to_string(tt);
std::cout << timeStamp << std::endl;
return 0;
}