How to get current time and date in C++?

Question

Is there a cross-platform way to get the current date and time in C++?

Answer 1

In C++ 11 you can use std::chrono::system_clock::now()

Example (copied from en.cppreference.com):

#include <iostream> #include <chrono> #include <ctime>      int main() {     auto start = std::chrono::system_clock::now();     // Some computation here     auto end = std::chrono::system_clock::now();      std::chrono::duration<double> elapsed_seconds = end-start;     std::time_t end_time = std::chrono::system_clock::to_time_t(end);      std::cout << "finished computation at " << std::ctime(&end_time)               << "elapsed time: " << elapsed_seconds.count() << "s\n"; } 

This should print something like this:

finished computation at Mon Oct  2 00:59:08 2017 elapsed time: 1.88232s