title Preprocessing Directives ms.date 11/04/2016 helpviewer_keywords preprocessing directives, C preprocessing directives ms.assetid b27d7444-8f84-4c31-b2fa-03335412d5e6 Preprocessing Directives Character Constants and Conditional Inclusion Including Bracketed Filenames Including Quoted Filenames Character Sequences Pragmas Default Date and Time See also Implementation-Defined Behavior