mirror of https://github.com/mkerrisk/man-pages
87 lines
2.5 KiB
Plaintext
87 lines
2.5 KiB
Plaintext
.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved
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.TH "PUTS" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
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.\" puts
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.SH NAME
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puts \- put a string on standard output
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.SH SYNOPSIS
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.LP
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\fB#include <stdio.h>
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.br
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.sp
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int puts(const char *\fP\fIs\fP\fB);
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.br
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\fP
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.SH DESCRIPTION
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.LP
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The \fIputs\fP() function shall write the string pointed to by \fIs\fP,
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followed by a <newline>, to the standard output
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stream \fIstdout\fP. The terminating null byte shall not be written.
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.LP
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The
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\fIst_ctime\fP and \fIst_mtime\fP fields of the file shall be marked
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for update between the successful execution of \fIputs\fP()
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and the next successful completion of a call to \fIfflush\fP() or
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\fIfclose\fP() on the same stream or a call to \fIexit\fP()
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or \fIabort\fP().
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.SH RETURN VALUE
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.LP
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Upon successful completion, \fIputs\fP() shall return a non-negative
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number. Otherwise, it shall return EOF, shall set an error
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indicator for the stream, \ and \fIerrno\fP shall be set to indicate
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the error.
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.SH ERRORS
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.LP
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Refer to \fIfputc\fP() .
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.LP
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\fIThe following sections are informative.\fP
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.SH EXAMPLES
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.SS Printing to Standard Output
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.LP
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The following example gets the current time, converts it to a string
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using \fIlocaltime\fP() and \fIasctime\fP(), and prints it to
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standard output using \fIputs\fP(). It then prints the number of minutes
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to an event for which it is waiting.
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.sp
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.RS
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.nf
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\fB#include <time.h>
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#include <stdio.h>
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\&...
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time_t now;
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int minutes_to_event;
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\&...
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time(&now);
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printf("The time is ");
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puts(asctime(localtime(&now)));
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printf("There are %d minutes to the event.\\n",
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minutes_to_event);
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\&...
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\fP
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.fi
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.RE
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.SH APPLICATION USAGE
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.LP
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The \fIputs\fP() function appends a <newline>, while \fIfputs\fP()
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does not.
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.SH RATIONALE
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.LP
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None.
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.SH FUTURE DIRECTIONS
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.LP
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None.
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.SH SEE ALSO
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.LP
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\fIfopen\fP() , \fIfputs\fP() , \fIputc\fP() , the
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Base Definitions volume of IEEE\ Std\ 1003.1-2001, \fI<stdio.h>\fP
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.SH COPYRIGHT
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Portions of this text are reprinted and reproduced in electronic form
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from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
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-- Portable Operating System Interface (POSIX), The Open Group Base
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Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
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Electrical and Electronics Engineers, Inc and The Open Group. In the
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event of any discrepancy between this version and the original IEEE and
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The Open Group Standard, the original IEEE and The Open Group Standard
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is the referee document. The original Standard can be obtained online at
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http://www.opengroup.org/unix/online.html .
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