• 获取当前系统本地时间,精确到毫秒


     1 #include <sys/timeb.h>
     2 #include <chrono>
     3 
     4 char* cur_time_c(char strDateTime[32])
     5 {
     6     struct timeb tp_cur;
     7     ftime(&tp_cur);
     8 
     9     struct tm btm;
    10 
    11 #ifdef WIN32
    12     localtime_s(&btm, &tp_cur.time);
    13 #else
    14     localtime_r(&tp_cur.time, &btm);
    15 #endif
    16 
    17     sprintf(strDateTime, "%04d-%02d-%02d %02d:%02d:%02d.%03d", 
    18         btm.tm_year + 1900, btm.tm_mon + 1, btm.tm_mday,
    19         btm.tm_hour, btm.tm_min, btm.tm_sec, tp_cur.millitm);
    20 
    21     return strDateTime;
    22 }
    23 
    24 
    25 char* cur_time_cpp11(char strDateTime[32])
    26 {
    27     static const std::chrono::hours = EIGHT_HOURS(8);
    28 
    29     auto nowLocalTimeCount 
    30         = std::chrono::system_clock::now().time_since_epoch()
    31         + EIGHT_HOURS;
    32 
    33     std::chrono::hours now_h
    34         = std::chrono::duration_cast<std::chrono::hours>(nowLocalTimeCount);
    35     std::chrono::minutes now_m
    36         = std::chrono::duration_cast<std::chrono::minutes>(nowLocalTimeCount);
    37     std::chrono::seconds now_s
    38         = std::chrono::duration_cast<std::chrono::seconds>(nowLocalTimeCount);
    39     std::chrono::milliseconds now_ms
    40         = std::chrono::duration_cast<std::chrono::milliseconds>(nowLocalTimeCount);
    41 
    42     sprintf(strDateTime, "%02d:%02d:%02d.%03d", 
    43         now_h % 24, now_m % 60, now_s % 60, now_ms % 1000);
    44 
    45     return strDateTime;
    46 }
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  • 原文地址:https://www.cnblogs.com/suyunhong/p/7773476.html
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