getwc - get wide character from stream

Syntax	#include <wchar.h> Optional #include <stdio.h> (End) wint_t getwc(FILE *stream);
Description	getwc() is implemented both as a function and as a macro. It is equivalent to fgetwc(), except that if it is implemented as a macro it may evaluate stream more than once, so the argument should never be an expression with side effects. Restriction This version of the C runtime system only supports 1-byte characters as wide character codes. They are of type wchar_t (see stddef.h). (End)
Return val. Errors Notes	See fgetwc(). See fgetwc(). This interface is provided to support some current implementations and possible future ISO standards. When getwc() is implemented as a macro, it may handle a stream argument with side effects incorrectly. In particular, getwc(*f++) may not work as expected. The use of fgetwc() is therefore recommended in such situations.
See also	fgetwc(), stdio.h, wchar.h.