Windows Runtime unsupported CRT functions
Many C run-time (CRT) APIs can't be used in Universal Windows Platform (UWP) apps that execute in the Windows Runtime. These apps are built by using the /ZW compiler flag. For a list of unsupported CRT functions, see CRT functions not supported in Universal Windows Platform apps.
All CRT APIs are described in the Alphabetical function reference section of the documentation.
See also
Universal C runtime routines by category
Alphabetical function reference
Feedback
Coming soon: Throughout 2024 we will be phasing out GitHub Issues as the feedback mechanism for content and replacing it with a new feedback system. For more information see: https://aka.ms/ContentUserFeedback.
Submit and view feedback for