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126 lines
3.6 KiB
Groff
126 lines
3.6 KiB
Groff
.\" Copyright (c) 1990, 1991, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" This code is derived from software contributed to Berkeley by
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.\" Chris Torek and the American National Standards Committee X3,
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.\" on Information Processing Systems.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)putc.3 8.1 (Berkeley) 6/4/93
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.\"
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.TH PUTC 3 "15 September 1997" GNO "Library Routines"
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.SH NAME
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.BR fputc ,
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.BR putc ,
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.BR putchar ,
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.BR putw
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\- output a character or word to a stream
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.SH SYNOPSIS
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#include <stdio.h>
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.sp 1
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int \fBfputc\fR (int \fIc\fR, FILE *\fIstream\fR);
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.br
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int \fBputc\fR (int \fIc\fR, FILE *\fIstream\fR);
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.br
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int \fBputchar\fR (int \fIc\fR);
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.br
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int \fBputw\fR (int \fIw\fR, FILE *\fIstream\fR);
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.SH DESCRIPTION
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The
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.BR fputc
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function
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writes the character
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.I c
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(converted to an ``unsigned char'')
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to the output stream pointed to by
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.IR stream .
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.LP
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.BR Putc
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acts essentially identically to
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.BR fputc ,
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but is a macro that expands in-line. It may evaluate
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.I stream
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more than once, so arguments given to
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.BR putc
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should not be expressions with potential side effects.
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.LP
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.BR Putchar
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is identical to
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.BR putc
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with an output stream of
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.IR stdout .
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.LP
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The
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.BR putw
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function
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writes the specified
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.IR int
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to the named output
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.IR stream .
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.SH RETURN VALUES
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The functions,
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.BR fputc ,
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.BR putc
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and
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.BR putchar
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return the character written.
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If an error occurs, the value
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.BR EOF
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is returned.
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The
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.BR putw
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function
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returns 0 on success;
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.BR EOF
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is returned if
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a write error occurs,
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or if an attempt is made to write a read-only stream.
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.SH SEE ALSO
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.BR ferror (3),
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.BR fopen (3),
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.BR getc (3),
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.BR stdio (3)
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.SH STANDARDS
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The functions
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.BR fputc ,
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.BR putc ,
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and
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.BR putchar ,
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conform to ANSI/C.
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A function
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.BR putw
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function appeared in Version 6 AT&T UNIX.
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.SH BUGS
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The size and byte order of an
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.IR int
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varies from one machine to another, and
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.BR putw
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is not recommended for portable applications.
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