150 lines
5.5 KiB
HTML
150 lines
5.5 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<!-- Copyright (c) 2001 The Open Group, All Rights Reserved -->
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<title>puts</title>
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<body bgcolor="white">
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<script type="text/javascript" language="JavaScript" src="../jscript/codes.js">
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<basefont size="3"> <a name="puts"></a> <a name="tag_03_585"></a><!-- puts -->
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<!--header start-->
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<center><font size="2">The Open Group Base Specifications Issue 6<br>
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IEEE Std 1003.1-2001<br>
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Copyright © 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
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<!--header end-->
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<hr size="2" noshade>
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<h4><a name="tag_03_585_01"></a>NAME</h4>
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<blockquote>puts - put a string on standard output</blockquote>
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<h4><a name="tag_03_585_02"></a>SYNOPSIS</h4>
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<blockquote class="synopsis">
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<p><code><tt>#include <<a href="../basedefs/stdio.h.html">stdio.h</a>><br>
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<br>
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int puts(const char *</tt><i>s</i><tt>);<br>
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</tt></code></p>
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</blockquote>
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<h4><a name="tag_03_585_03"></a>DESCRIPTION</h4>
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<blockquote>
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<div class="box"><sup>[<a href="javascript:open_code('CX')">CX</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]"
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border="0"> The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the
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requirements described here and the ISO C standard is unintentional. This volume of IEEE Std 1003.1-2001 defers to
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the ISO C standard. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></div>
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<p>The <i>puts</i>() function shall write the string pointed to by <i>s</i>, followed by a <newline>, to the standard output
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stream <i>stdout</i>. The terminating null byte shall not be written.</p>
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<p><sup>[<a href="javascript:open_code('CX')">CX</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border="0"> The
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<i>st_ctime</i> and <i>st_mtime</i> fields of the file shall be marked for update between the successful execution of <i>puts</i>()
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and the next successful completion of a call to <a href="../functions/fflush.html"><i>fflush</i>()</a> or <a href=
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"../functions/fclose.html"><i>fclose</i>()</a> on the same stream or a call to <a href="../functions/exit.html"><i>exit</i>()</a>
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or <a href="../functions/abort.html"><i>abort</i>()</a>. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></p>
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</blockquote>
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<h4><a name="tag_03_585_04"></a>RETURN VALUE</h4>
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<blockquote>
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<p>Upon successful completion, <i>puts</i>() shall return a non-negative number. Otherwise, it shall return EOF, shall set an error
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indicator for the stream, <sup>[<a href="javascript:open_code('CX')">CX</a>]</sup> <img src="../images/opt-start.gif" alt=
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"[Option Start]" border="0"> and <i>errno</i> shall be set to indicate the error. <img src="../images/opt-end.gif" alt=
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"[Option End]" border="0"></p>
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</blockquote>
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<h4><a name="tag_03_585_05"></a>ERRORS</h4>
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<blockquote>
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<p>Refer to <a href="fputc.html"><i>fputc</i>()</a> .</p>
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</blockquote>
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<hr>
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<div class="box"><em>The following sections are informative.</em></div>
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<h4><a name="tag_03_585_06"></a>EXAMPLES</h4>
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<blockquote>
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<h5><a name="tag_03_585_06_01"></a>Printing to Standard Output</h5>
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<p>The following example gets the current time, converts it to a string using <a href=
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"../functions/localtime.html"><i>localtime</i>()</a> and <a href="../functions/asctime.html"><i>asctime</i>()</a>, and prints it to
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standard output using <i>puts</i>(). It then prints the number of minutes to an event for which it is waiting.</p>
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<pre>
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<tt>#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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</tt>
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</pre>
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</blockquote>
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<h4><a name="tag_03_585_07"></a>APPLICATION USAGE</h4>
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<blockquote>
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<p>The <i>puts</i>() function appends a <newline>, while <a href="../functions/fputs.html"><i>fputs</i>()</a> does not.</p>
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</blockquote>
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<h4><a name="tag_03_585_08"></a>RATIONALE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_585_09"></a>FUTURE DIRECTIONS</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_585_10"></a>SEE ALSO</h4>
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<blockquote>
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<p><a href="fopen.html"><i>fopen</i>()</a> , <a href="fputs.html"><i>fputs</i>()</a> , <a href="putc.html"><i>putc</i>()</a> , the
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Base Definitions volume of IEEE Std 1003.1-2001, <a href="../basedefs/stdio.h.html"><i><stdio.h></i></a></p>
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</blockquote>
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<h4><a name="tag_03_585_11"></a>CHANGE HISTORY</h4>
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<blockquote>
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<p>First released in Issue 1. Derived from Issue 1 of the SVID.</p>
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</blockquote>
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<h4><a name="tag_03_585_12"></a>Issue 6</h4>
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<blockquote>
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<p>Extensions beyond the ISO C standard are marked.</p>
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</blockquote>
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<div class="box"><em>End of informative text.</em></div>
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