I need to get the millisecond accuracy. I take a look on this question but I am working on Windows: it gives linking errors for POSIX functions.
It will be very good if I can get UTC time since 1970 with milliseconds precision.
Not in ANSI C, but the Windows API provides a GetSystemTime
function as illustrated here: https://learn.microsoft.com/en-us/windows/win32/api/minwinbase/ns-minwinbase-systemtime