Get millisecond part of time

Question

I need to get milliseconds from the timer

    // get timer part
    time_t timer = time(NULL);
    struct tm now = *localtime( &timer );
    char timesta         


        

Answer 1

You can youse boost::posix_time::ptime class. Its reference there.

Answer 2

there is the function getimeofday(). returns time in ms check here: http://souptonuts.sourceforge.net/code/gettimeofday.c.html

Answer 3

On Windows using Win32 API SYSTEMTIME structure will give you milliseconds. Then, you should use Time Functions to get time. Like this:

#include <windows.h>

int main()
{
    SYSTEMTIME stime;
    //structure to store system time (in usual time format)
    FILETIME ltime;
    //structure to store local time (local time in 64 bits)
    FILETIME ftTimeStamp;
    char TimeStamp[256];//to store TimeStamp information
    GetSystemTimeAsFileTime(&ftTimeStamp); //Gets the current system time

    FileTimeToLocalFileTime (&ftTimeStamp,&ltime);//convert in local time and store in ltime
    FileTimeToSystemTime(&ltime,&stime);//convert in system time and store in stime

    sprintf(TimeStamp, "%d:%d:%d:%d, %d.%d.%d",stime.wHour,stime.wMinute,stime.wSecond, 
            stime.wMilliseconds, stime.wDay,stime.wMonth,stime.wYear);

    printf(TimeStamp);

    return 0;
} 

Answer 4

Try with this code:

struct tvTime;

gettimeofday(&tvTime, NULL);

int iTotal_seconds = tvTime.tv_sec;
struct tm *ptm = localtime((const time_t *) & iTotal_seconds);

int iHour = ptm->tm_hour;;
int iMinute = ptm->tm_min;
int iSecond = ptm->tm_sec;
int iMilliSec = tvTime.tv_usec / 1000;
int iMicroSec = tvTime.tv_usec;

Answer 5

I, personally, use this one: http://wyw.dcweb.cn/time.htm

Answer 6

#include <chrono>

typedef std::chrono::system_clock Clock;

auto now = Clock::now();
auto seconds = std::chrono::time_point_cast<std::chrono::seconds>(now);
auto fraction = now - seconds;
time_t cnow = Clock::to_time_t(now);

Then you can print out the time_t with seconds precision and then print whatever the fraction represents. Could be milliseconds, microseconds, or something else. To specifically get milliseconds:

auto milliseconds = std::chrono::duration_cast<std::chrono::milliseconds>(fraction);
std::cout << milliseconds.count() << '\n';