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Windows Runtime unsupported CRT functions

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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