1 '\" te
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  10 .TH GETWC 3C "Jul 24, 2002"
  11 .SH NAME
  12 getwc \- get wide character from a stream
  13 .SH SYNOPSIS
  14 .LP
  15 .nf
  16 #include <stdio.h>
  17 #include <wchar.h>
  18 
  19 \fBwint_t\fR \fBgetwc\fR(\fBFILE\fR \fI*stream\fR);
  20 .fi
  21 
  22 .SH DESCRIPTION
  23 .sp
  24 .LP
  25 The \fBgetwc()\fR function is equivalent to \fBfgetwc\fR(3C), except that if it
  26 is implemented as a macro it may evaluate \fIstream\fR more than once, so the
  27 argument should never be an expression with side effects.
  28 .SH RETURN VALUES
  29 .sp
  30 .LP
  31 Refer to \fBfgetwc\fR(3C).
  32 .SH ERRORS
  33 .sp
  34 .LP
  35 Refer to \fBfgetwc\fR(3C).
  36 .SH USAGE
  37 .sp
  38 .LP
  39 This interface is provided to align with some current implementations and with
  40 possible future \fBISO\fR standards.
  41 .sp
  42 .LP
  43 Because it may be implemented as a macro, \fBgetwc()\fR may treat incorrectly a
  44 \fIstream\fR argument with side effects.  In particular,
  45 \fBgetwc\fR(*\fIf\fR\|++) may not work as expected.  Therefore, use of this
  46 function is not recommended; \fBfgetwc\fR(3C) should be used instead.
  47 .SH ATTRIBUTES
  48 .sp
  49 .LP
  50 See \fBattributes\fR(5) for descriptions of the following attributes:
  51 .sp
  52 
  53 .sp
  54 .TS
  55 box;
  56 c | c
  57 l | l .
  58 ATTRIBUTE TYPE  ATTRIBUTE VALUE
  59 _
  60 Interface Stability     Standard
  61 _
  62 MT-Level        MT-Safe
  63 .TE
  64 
  65 .SH SEE ALSO
  66 .sp
  67 .LP
  68 \fBfgetwc\fR(3C), \fBattributes\fR(5), \fBstandards\fR(5)