What's the best method to print out time in C in the format 2009‐08‐10
18:17:54.811
?
Use strftime().
#include <stdio.h>
#include <time.h>
int main()
{
time_t timer;
char buffer[26];
struct tm* tm_info;
timer = time(NULL);
tm_info = localtime(&timer);
strftime(buffer, 26, "%Y-%m-%d %H:%M:%S", tm_info);
puts(buffer);
return 0;
}
For milliseconds part, have a look at this question. How to measure time in milliseconds using ANSI C?