title: Represent DateTime in OLE Automation Format In C
body: <p>I'm new to C and I'm looking for a way to represent a datetime value in OLE Automation format in C, something like DateTime.TOADate() that we have in C# </p>
  
  <p>To represent my DateTime, I have been looking at using the struct tm from time.h, however I have a question about this too. I need to represent the milliseconds part as well but from looking at the documentation it appears to only break it down as far as the seconds part?</p>
  
  <p>Thanks</p>