1 .\" Copyright (c) 1990, 1991, 1993
2 .\" The Regents of the University of California. All rights reserved.
4 .\" This code is derived from software contributed to Berkeley by
5 .\" Chris Torek and the American National Standards Committee X3,
6 .\" on Information Processing Systems.
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36 .\" @(#)putc.3 8.1 (Berkeley) 6/4/93
37 .\" $FreeBSD: src/lib/libc/stdio/putc.3,v 1.5.2.3 2001/12/14 18:33:57 ru Exp $
38 .\" $DragonFly: src/lib/libc/stdio/putc.3,v 1.2 2003/06/17 04:26:46 dillon Exp $
48 .Nd output a character or word to a stream
54 .Fn fputc "int c" "FILE *stream"
56 .Fn putc "int c" "FILE *stream"
60 .Fn putw "int w" "FILE *stream"
67 (converted to an ``unsigned char'')
68 to the output stream pointed to by
73 macro acts essentially identically to
75 but is a macro that expands in-line.
78 more than once, so arguments given to
80 should not be expressions with potential side effects.
87 with an output stream of
103 return the character written.
104 If an error occurs, the value
110 returns 0 on success;
113 a write error occurs,
114 or if an attempt is made to write a read-only stream.
133 The size and byte order of an
135 varies from one machine to another, and
137 is not recommended for portable applications.