C++片段¶

1. c++获取时间戳 查看...查看...

   #include <iostream>
   #include <chrono>
   #include <ctime>
   
   time_t GetTimestamp1()
   {
       auto now = std::chrono::system_clock::now();
       std::time_t timestamp = std::chrono::system_clock::to_time_t(now - std::chrono::hours(0));
       std::cout << "时间戳:  " << timestamp << std::endl;
       return timestamp;
   }
   
   int64_t GetTimestamp2()
   {
       auto now = std::chrono::system_clock::now();
       auto timestamp = std::chrono::duration_cast<std::chrono::seconds>(now.time_since_epoch()).count();
       std::cout << "时间戳: " << timestamp << std::endl;
       return timestamp;
   }
   
   void ConvertToLocalTime(std::time_t timestamp) {
       std::tm* local_time = std::localtime(&timestamp);
       std::cout << "本地时间: " << std::asctime(local_time);
   }
   
   void ConvertToUTCTime(std::time_t timestamp) {
       std::tm* utc_time = std::gmtime(&timestamp);
       std::cout << "UTC时间: " << std::asctime(utc_time);
   }
   
   int main() {
       time_t timestamp = GetTimestamp1();
       ConvertToLocalTime(timestamp);
       ConvertToUTCTime(timestamp);
   
       return 0;
   }