How to print time in format: 2009‐08‐10 18:17:54.811

Question

What's the best method to print out time in C in the format 2009‐08‐10 
18:17:54.811?

Answer 1

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?