Question

How to get time since epoch in milliseconds with C

Answer 1

#include <stdio.h>
#include <sys/time.h>

int main(void) {
    struct timeval tv;

    gettimeofday(&tv, NULL);

    unsigned long long milliseconds = (unsigned long long)(tv.tv_sec) * 1000 +  
                                      (unsigned long long)(tv.tv_usec) / 1000;

    printf("Time since epoch: %llu milliseconds", milliseconds);
}




/*
run:

Time since epoch: 1676044173527 milliseconds

*/

 

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