#include <chrono> #include <filesystem> #include <format> #include <fstream> #include <iostream> using namespace std::chrono_literals; int main() { auto p = std::filesystem::temp_directory_path() / "example.bin"; std::ofstream{p.c_str()}.put('a'); // create file std::filesystem::file_time_type ftime = std::filesystem::last_write_time(p); std::cout << std::format("File write time is {}\n", ftime); // move file write time 1 hour to the future std::filesystem::last_write_time(p, ftime + 1h); // read back from the filesystem ftime = std::filesystem::last_write_time(p); std::cout << std::format("File write time is {}\n", ftime); std::filesystem::remove(p); }
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