File: pointer.html

package info (click to toggle)
cppreference-doc 20170409-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 259,868 kB
  • sloc: xml: 570,184; python: 1,923; php: 520; makefile: 167; sh: 25; cpp: 9; ansic: 9
file content (509 lines) | stat: -rw-r--r-- 54,569 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
<!DOCTYPE html>
<html lang="en" dir="ltr" class="client-nojs">
<head>
<title>Pointer declaration - cppreference.com</title>
<meta charset="UTF-8" />
<meta name="generator" content="MediaWiki 1.21.2" />
<link rel="alternate" type="application/x-wiki" title="Edit" href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=edit" />
<link rel="edit" title="Edit" href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=edit" />
<link rel="shortcut icon" href="../../../favicon.ico" />
<link rel="search" type="application/opensearchdescription+xml" href="../../../mwiki/opensearch_desc.php" title="cppreference.com (en)" />
<link rel="EditURI" type="application/rsd+xml" href="http://en.cppreference.com/mwiki/api.php?action=rsd" />
<link rel="alternate" type="application/atom+xml" title="cppreference.com Atom feed" href="http://en.cppreference.com/mwiki/index.php?title=Special:RecentChanges&amp;feed=atom" />
<link rel="stylesheet" href="../../../mwiki/load.php%3Fdebug=false&amp;lang=en&amp;modules=ext.gadget.ColiruCompiler%257Cext.rtlcite%257Cmediawiki.legacy.commonPrint%252Cshared%257Cskins.cppreference2&amp;only=styles&amp;skin=cppreference2&amp;*.css" />
<meta name="ResourceLoaderDynamicStyles" content="" />
<link rel="stylesheet" href="../../../mwiki/load.php%3Fdebug=false&amp;lang=en&amp;modules=site&amp;only=styles&amp;skin=cppreference2&amp;*.css" />
<style>a:lang(ar),a:lang(ckb),a:lang(fa),a:lang(kk-arab),a:lang(mzn),a:lang(ps),a:lang(ur){text-decoration:none}#toc{display:none}.editsection{display:none}
/* cache key: mwiki1-mwiki_en_:resourceloader:filter:minify-css:7:472787eddcf4605d11de8c7ef047234f */</style>

<script src="../../../mwiki/load.php%3Fdebug=false&amp;lang=en&amp;modules=startup&amp;only=scripts&amp;skin=cppreference2&amp;*"></script>
<script>if(window.mw){
mw.config.set({"wgCanonicalNamespace":"","wgCanonicalSpecialPageName":false,"wgNamespaceNumber":0,"wgPageName":"c/language/pointer","wgTitle":"c/language/pointer","wgCurRevisionId":79111,"wgArticleId":13950,"wgIsArticle":true,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":[],"wgBreakFrames":false,"wgPageContentLanguage":"en","wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgMonthNamesShort":["","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],"wgRelevantPageName":"c/language/pointer","wgRestrictionEdit":[],"wgRestrictionMove":[]});
}</script><script>if(window.mw){
mw.loader.implement("user.options",function(){mw.user.options.set({"ccmeonemails":0,"cols":80,"date":"default","diffonly":0,"disablemail":0,"disablesuggest":0,"editfont":"default","editondblclick":0,"editsection":0,"editsectiononrightclick":0,"enotifminoredits":0,"enotifrevealaddr":0,"enotifusertalkpages":1,"enotifwatchlistpages":0,"extendwatchlist":0,"externaldiff":0,"externaleditor":0,"fancysig":0,"forceeditsummary":0,"gender":"unknown","hideminor":0,"hidepatrolled":0,"imagesize":2,"justify":0,"math":1,"minordefault":0,"newpageshidepatrolled":0,"nocache":0,"noconvertlink":0,"norollbackdiff":0,"numberheadings":0,"previewonfirst":0,"previewontop":1,"quickbar":5,"rcdays":7,"rclimit":50,"rememberpassword":0,"rows":25,"searchlimit":20,"showhiddencats":0,"showjumplinks":1,"shownumberswatching":1,"showtoc":0,"showtoolbar":1,"skin":"cppreference2","stubthreshold":0,"thumbsize":2,"underline":2,"uselivepreview":0,"usenewrc":0,"watchcreations":0,"watchdefault":0,"watchdeletion":0,
"watchlistdays":3,"watchlisthideanons":0,"watchlisthidebots":0,"watchlisthideliu":0,"watchlisthideminor":0,"watchlisthideown":0,"watchlisthidepatrolled":0,"watchmoves":0,"wllimit":250,"variant":"en","language":"en","searchNs0":true,"searchNs1":false,"searchNs2":false,"searchNs3":false,"searchNs4":false,"searchNs5":false,"searchNs6":false,"searchNs7":false,"searchNs8":false,"searchNs9":false,"searchNs10":false,"searchNs11":false,"searchNs12":false,"searchNs13":false,"searchNs14":false,"searchNs15":false,"gadget-ColiruCompiler":1});;},{},{});mw.loader.implement("user.tokens",function(){mw.user.tokens.set({"editToken":"+\\","patrolToken":false,"watchToken":false});;},{},{});
/* cache key: mwiki1-mwiki_en_:resourceloader:filter:minify-js:7:ca03345b1e2c4d90a25d968753a73b92 */
}</script>
<script>if(window.mw){
mw.loader.load(["mediawiki.page.startup","mediawiki.legacy.wikibits","mediawiki.legacy.ajax"]);
}</script>
<style type="text/css">/*<![CDATA[*/
.source-c {line-height: normal;}
.source-c li, .source-c pre {
	line-height: normal; border: 0px none white;
}
/**
 * GeSHi Dynamically Generated Stylesheet
 * --------------------------------------
 * Dynamically generated stylesheet for c
 * CSS class: source-c, CSS id: 
 * GeSHi (C) 2004 - 2007 Nigel McNie, 2007 - 2008 Benny Baumann
 * (http://qbnz.com/highlighter/ and http://geshi.org/)
 * --------------------------------------
 */
.c.source-c .de1, .c.source-c .de2 {font: normal normal 1em/1.2em monospace; margin:0; padding:0; background:none; vertical-align:top;}
.c.source-c  {font-family:monospace;}
.c.source-c .imp {font-weight: bold; color: red;}
.c.source-c li, .c.source-c .li1 {font-weight: normal; vertical-align:top;}
.c.source-c .ln {width:1px;text-align:right;margin:0;padding:0 2px;vertical-align:top;}
.c.source-c .li2 {font-weight: bold; vertical-align:top;}
.c.source-c .kw1 {color: #0000dd;}
.c.source-c .kw2 {color: #0000ff;}
.c.source-c .kw3 {color: #0000dd;}
.c.source-c .kw4 {color: #0000ff;}
.c.source-c .co1 {color: #909090;}
.c.source-c .co2 {color: #339900;}
.c.source-c .coMULTI {color: #ff0000; font-style: italic;}
.c.source-c .es0 {color: #008000; font-weight: bold;}
.c.source-c .es1 {color: #008000; font-weight: bold;}
.c.source-c .es2 {color: #008000; font-weight: bold;}
.c.source-c .es3 {color: #008000; font-weight: bold;}
.c.source-c .es4 {color: #008000; font-weight: bold;}
.c.source-c .es5 {color: #008000; font-weight: bold;}
.c.source-c .br0 {color: #008000;}
.c.source-c .sy0 {color: #008000;}
.c.source-c .sy1 {color: #000080;}
.c.source-c .sy2 {color: #000040;}
.c.source-c .sy3 {color: #000040;}
.c.source-c .sy4 {color: #008080;}
.c.source-c .st0 {color: #008000;}
.c.source-c .nu0 {color: #000080;}
.c.source-c .nu6 {color:#000080;}
.c.source-c .nu8 {color:#000080;}
.c.source-c .nu12 {color:#000080;}
.c.source-c .nu16 {color:#000080;}
.c.source-c .nu17 {color:#000080;}
.c.source-c .nu18 {color:#000080;}
.c.source-c .nu19 {color:#000080;}
.c.source-c .ln-xtra, .c.source-c li.ln-xtra, .c.source-c div.ln-xtra {background-color: #ffc;}
.c.source-c span.xtra { display:block; }

/*]]>*/
</style><!--[if lt IE 7]><style type="text/css">body{behavior:url("/mwiki/skins/cppreference2/csshover.min.htc")}</style><![endif]--></head>
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-c_language_pointer skin-cppreference2 action-view cpp-navbar">
        <!-- header -->
        <div id="mw-head" class="noprint">
            <div id="cpp-head-first-base">
                <div id="cpp-head-first">
                    <h5><a href="../../../index.html">
                        cppreference.com                        </a></h5>
                    <div id="cpp-head-search">
                        
<!-- 0 -->
<div id="p-search">
	<h5><label for="searchInput">Search</label></h5>
	<form action="http://en.cppreference.com/mwiki/index.php" id="searchform">
		<input type='hidden' name="title" value="Special:Search"/>
				<div id="simpleSearch">
						<input name="search" title="Search cppreference.com [f]" accesskey="f" id="searchInput" />						<button type="submit" name="button" title="Search the pages for this text" id="searchButton"><img src="../../../mwiki/skins/cppreference2/images/search-ltr.png%3F303" alt="Search" /></button>					</div>
			</form>
</div>

<!-- /0 -->
                    </div>
                    <div id="cpp-head-personal">
                        
<!-- 0 -->
<div id="p-personal" class="">
<span id="pt-createaccount"><a href="http://en.cppreference.com/mwiki/index.php?title=Special:UserLogin&amp;returnto=c%2Flanguage%2Fpointer&amp;type=signup">Create account</a></span>	<div class="menu">
        <ul>
<li id="pt-login"><a href="http://en.cppreference.com/mwiki/index.php?title=Special:UserLogin&amp;returnto=c%2Flanguage%2Fpointer" title="You are encouraged to log in; however, it is not mandatory [o]" accesskey="o">Log in</a></li>        </ul>
    </div>
</div>

<!-- /0 -->
                    </div>

                </div>
            </div>
            <div id="cpp-head-second-base">
                <div id="cpp-head-second">
                    <div id="cpp-head-tools-left">
                        
<!-- 0 -->
<div id="p-namespaces" class="vectorTabs">
	<h5>Namespaces</h5>
	<ul>
					<li  id="ca-nstab-main" class="selected"><span><a href="pointer.html"  title="View the content page [c]" accesskey="c">Page</a></span></li>
					<li  id="ca-talk" class="new"><span><a href="http://en.cppreference.com/mwiki/index.php?title=Talk:c/language/pointer&amp;action=edit&amp;redlink=1"  title="Discussion about the content page [t]" accesskey="t">Discussion</a></span></li>
			</ul>
</div>

<!-- /0 -->

<!-- 1 -->
<div id="p-variants" class="vectorMenu emptyPortlet">
		<h5><span>Variants</span><a href="pointer.html#"></a></h5>
	<div class="menu">
		<ul>
					</ul>
	</div>
</div>

<!-- /1 -->
                    </div>
                    <div id="cpp-head-tools-right">
                        
<!-- 0 -->
<div id="p-views" class="vectorTabs">
	<h5>Views</h5>
	<ul>
					<li id="ca-view" class="selected"><span><a href="pointer.html" >View</a></span></li>
					<li id="ca-edit"><span><a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=edit"  title="You can edit this page. Please use the preview button before saving [e]" accesskey="e">Edit</a></span></li>
					<li id="ca-history" class="collapsible"><span><a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=history"  title="Past revisions of this page [h]" accesskey="h">History</a></span></li>
			</ul>
</div>

<!-- /0 -->

<!-- 1 -->
<div id="p-cactions" class="vectorMenu emptyPortlet">
	<h5><span>Actions</span><a href="pointer.html#"></a></h5>
	<div class="menu">
		<ul>
					</ul>
	</div>
</div>

<!-- /1 -->
                    </div>
                </div>
            </div>
        </div>
        <!-- /header -->
        <!-- content -->
        <div id="cpp-content-base">
            <div id="content">
                <a id="top"></a>
                <div id="mw-js-message" style="display:none;"></div>
                                <!-- firstHeading -->
                <h1 id="firstHeading" class="firstHeading">Pointer declaration</h1>
                <!-- /firstHeading -->
                <!-- bodyContent -->
                <div id="bodyContent">
                                        <!-- tagline -->
                    <div id="siteSub">From cppreference.com</div>
                    <!-- /tagline -->
                                        <!-- subtitle -->
                    <div id="contentSub"><span class="subpages">&lt; <a href="../../c.html" title="c">c</a>&lrm; | <a href="../language.1.html" title="c/language">language</a></span></div>
                    <!-- /subtitle -->
                                                            <!-- bodycontent -->
                    <div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr"><div class="t-navbar" style=""><div class="t-navbar-sep">&#160;</div><div class="t-navbar-head"><a href="../../c.html" title="c"> C</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="line-height:1.1em;">
<tr class="t-nv"><td colspan="5"> <a href="../language.1.html" title="c/language"> Language</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../header.html" title="c/header"> headers</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../types.html" title="c/types"> Type support</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../memory.html" title="c/memory"> Dynamic memory management</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../error.html" title="c/error"> Error handling</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../program.html" title="c/program"> Program utilities</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../variadic.html" title="c/variadic"> Variadic function support</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../chrono.html" title="c/chrono"> Date and time utilities</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../string.html" title="c/string"> Strings library</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../algorithm.html" title="c/algorithm"> Algorithms</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../numeric.html" title="c/numeric"> Numerics</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../io.html" title="c/io"> Input/output support</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../locale.html" title="c/locale"> Localization support</a> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../thread.html" title="c/thread"> Thread support</a> <span class="t-mark-rev t-since-c11">(C11)</span> </td></tr>
<tr class="t-nv"><td colspan="5"> <a href="../atomic.html" title="c/atomic"> Atomic operations</a> <span class="t-mark-rev t-since-c11">(C11)</span> </td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../experimental.html" title="c/experimental"><span class="t-lines"><span>Technical Specifications</span></span></a></div></div></td></tr>
</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:c/navbar_content&amp;action=edit">&#91;edit&#93;</a></span></div></div></div></div><div class="t-navbar-sep">&#160;</div><div class="t-navbar-head"><a href="../language.1.html" title="c/language"> C language</a><div class="t-navbar-menu"><div><div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="ascii.html" title="c/language/ascii"><span class="t-lines"><span>ASCII chart</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> <a href="basic_concepts.html" title="c/language/basic concepts">Basic concepts</a></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="translation_phases.html" title="c/language/translation phases"><span class="t-lines"><span>translation phases</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="../comment.html" title="c/comment"><span class="t-lines"><span>comment</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="identifier.html" title="c/language/identifier"><span class="t-lines"><span>identifier</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="scope.html" title="c/language/scope"><span class="t-lines"><span>scope</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="lifetime.html" title="c/language/lifetime"><span class="t-lines"><span>lifetime</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="name_space.html" title="c/language/name space"><span class="t-lines"><span>name space</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="compatible_type.html" title="c/language/type"><span class="t-lines"><span>type</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="arithmetic_types.html" title="c/language/arithmetic types"><span class="t-lines"><span>arithmetic types</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="object.html" title="c/language/object"><span class="t-lines"><span>object</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="main_function.html" title="c/language/main function"><span class="t-lines"><span>main function</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="memory_model.html" title="c/language/memory model"><span class="t-lines"><span>memory model</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> <a href="../keyword.html" title="c/keyword"> Keywords</a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> <a href="../preprocessor.html" title="c/preprocessor"> Preprocessor</a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> <a href="statements.html" title="c/language/statements"> Statements</a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> <a href="expressions.html" title="c/language/expressions"> Expressions</a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> <a href="initialization.html" title="c/language/initialization"> Initialization</a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> <a href="declarations.html" title="c/language/declarations"> Declarations</a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> <a href="functions.html" title="c/language/functions"> Functions</a></td></tr>
<tr class="t-nv-h2"><td colspan="5"> Miscellaneous</td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="history.html" title="c/language/history"><span class="t-lines"><span>history of C</span></span></a></div></div></td></tr>
<tr class="t-nv-h2"><td colspan="5"> <a href="../experimental.html" title="c/experimental">Technical Specifications</a> </td></tr>
</table></div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:c/language/navbar_content&amp;action=edit">&#91;edit&#93;</a></span></div></div></div></div><div class="t-navbar-sep">&#160;</div><div class="t-navbar-head"><a href="declarations.html" title="c/language/declarations"> Declarations</a><div class="t-navbar-menu"><div><div style="display:inline-block">
<div><table class="t-nv-begin" cellpadding="0" style="">
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><strong class="selflink"><span class="t-lines"><span>pointer</span></span></strong></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="array.html" title="c/language/array"><span class="t-lines"><span>array</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="enum.html" title="c/language/enum"><span class="t-lines"><span>enum</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="storage_duration.html" title="c/language/storage duration"><span class="t-lines"><span>storage duration and linkage</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="const.html" title="c/language/const"><span class="t-lines"><span>const</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="volatile.html" title="c/language/volatile"><span class="t-lines"><span>volatile</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="restrict.html" title="c/language/restrict"><span class="t-lines"><span>restrict</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="struct.html" title="c/language/struct"><span class="t-lines"><span>struct</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="union.html" title="c/language/union"><span class="t-lines"><span>union</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="bit_field.html" title="c/language/bit field"><span class="t-lines"><span>bit field</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="alignas.html" title="c/language/ Alignas"><span class="t-lines"><span>alignas</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="typedef.html" title="c/language/typedef"><span class="t-lines"><span>typedef</span></span></a></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="static_assert.html" title="c/language/ Static assert"><span class="t-lines"><span>static_assert</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="atomic.html" title="c/language/atomic"><span class="t-lines"><span>atomic types</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-c11">(C11)</span></span></span></div></div></td></tr>
<tr class="t-nv"><td colspan="5"><div class="t-nv-ln-table"><div><a href="extern.html" title="c/language/extern"><span class="t-lines"><span>external and tentative definitions</span></span></a></div></div></td></tr>
</table></div>
</div><div><span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:c/language/declarations/navbar_content&amp;action=edit">&#91;edit&#93;</a></span></div></div></div></div><div class="t-navbar-sep">&#160;</div></div>
<p>Pointer is a type of an object that refers to a function or an object of another type, possibly adding qualifiers. Pointer may also refer to nothing, which is indicated by the special null pointer value.
</p>
<table id="toc" class="toc"><tr><td><div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="pointer.html#Syntax"><span class="tocnumber">1</span> <span class="toctext">Syntax</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="pointer.html#Explanation"><span class="tocnumber">2</span> <span class="toctext">Explanation</span></a>
<ul>
<li class="toclevel-2 tocsection-3"><a href="pointer.html#Pointers_to_objects"><span class="tocnumber">2.1</span> <span class="toctext">Pointers to objects</span></a></li>
<li class="toclevel-2 tocsection-4"><a href="pointer.html#Pointers_to_functions"><span class="tocnumber">2.2</span> <span class="toctext">Pointers to functions</span></a></li>
<li class="toclevel-2 tocsection-5"><a href="pointer.html#Pointers_to_void"><span class="tocnumber">2.3</span> <span class="toctext">Pointers to void</span></a></li>
</ul>
</li>
<li class="toclevel-1 tocsection-6"><a href="pointer.html#Null_pointers"><span class="tocnumber">3</span> <span class="toctext">Null pointers</span></a></li>
<li class="toclevel-1 tocsection-7"><a href="pointer.html#Notes"><span class="tocnumber">4</span> <span class="toctext">Notes</span></a></li>
<li class="toclevel-1 tocsection-8"><a href="pointer.html#References"><span class="tocnumber">5</span> <span class="toctext">References</span></a></li>
<li class="toclevel-1 tocsection-9"><a href="pointer.html#See_also"><span class="tocnumber">6</span> <span class="toctext">See also</span></a></li>
</ul>
</td></tr></table>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=edit&amp;section=1" title="Edit section: Syntax">edit</a>]</span> <span class="mw-headline" id="Syntax">Syntax</span></h3>
<p>In the <a href="declarations.html" title="c/language/declarations">declaration grammar</a> of a pointer declaration, the <i>type-specifier</i> sequence designates the pointed-to type (which may be function or object type and may be incomplete), and the <i>declarator</i> has the form:
</p>
<table class="t-sdsc-begin">

<tr>
<td colspan="10" class="t-sdsc-sep">
</td></tr>
<tr class="t-sdsc">
<td> <code><b>*</b></code> <span class="t-spar">qualifiers</span><span class="t-mark">(optional)</span> <span class="t-spar">declarator</span>
</td>
<td> (1)
</td>
<td class="t-sdsc-nopad">
</td></tr>



<tr>
<td colspan="10" class="t-sdsc-sep">
</td></tr></table>
<p>where <span class="t-spar">declarator</span> may be the identifier that names the pointer being declared, including another pointer declarator (which would indicate a pointer to a pointer):
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="kw4">float</span> <span class="sy2">*</span>p, <span class="sy2">**</span>pp<span class="sy4">;</span> <span class="co1">// p is a pointer to float</span>
                <span class="co1">// pp is a pointer to a pointer to float</span>
<span class="kw4">int</span> <span class="br0">&#40;</span><span class="sy2">*</span>fp<span class="br0">&#41;</span><span class="br0">&#40;</span><span class="kw4">int</span><span class="br0">&#41;</span><span class="sy4">;</span> <span class="co1">// fp is a pointer to function with type int(int)</span></pre></div></div>
<p>The <span class="t-spar">qualifiers</span> that appear between <code><b>*</b></code> and the identifier (or other nested declarator) qualify the type of the pointer that is being declared:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="kw4">int</span> n<span class="sy4">;</span>
<span class="kw4">const</span> <span class="kw4">int</span> <span class="sy2">*</span> pc <span class="sy1">=</span> <span class="sy3">&amp;</span>n<span class="sy4">;</span> <span class="co1">// pc is a non-const pointer to a const int</span>
<span class="co1">// *pc = 2; // Error: n cannot be changed through p without a cast</span>
pc <span class="sy1">=</span> <a href="../types/NULL.html"><span class="kw103">NULL</span></a><span class="sy4">;</span> <span class="co1">// OK: pc itself can be changed</span>
&#160;
<span class="kw4">int</span> <span class="sy2">*</span> <span class="kw4">const</span> cp <span class="sy1">=</span> <span class="sy3">&amp;</span>n<span class="sy4">;</span> <span class="co1">// cp is a const pointer to a non-const int</span>
<span class="sy2">*</span>cp <span class="sy1">=</span> <span class="nu0">2</span><span class="sy4">;</span> <span class="co1">// OK to change n through cp</span>
<span class="co1">// cp = NULL; // Error: cp itself cannot be changed</span>
&#160;
<span class="kw4">int</span> <span class="sy2">*</span> <span class="kw4">const</span> <span class="sy2">*</span> pcp <span class="sy1">=</span> <span class="sy3">&amp;</span>cp<span class="sy4">;</span> <span class="co1">// non-const pointer to const pointer to non-const int</span></pre></div></div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=edit&amp;section=2" title="Edit section: Explanation">edit</a>]</span> <span class="mw-headline" id="Explanation">Explanation</span></h3>
<p>Pointers are used for indirection, which is a ubiquitous programming technique; they can be used to implement pass-by-reference semantics, to access objects with dynamic <a href="storage_duration.html" title="c/language/storage duration">storage duration</a>, to implement "optional" types (using the null pointer value), aggregation relationship between structs, callbacks (using pointers to functions), generic interfaces (using pointers to void), and much more.
</p>
<h4><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=edit&amp;section=3" title="Edit section: Pointers to objects">edit</a>]</span> <span class="mw-headline" id="Pointers_to_objects">Pointers to objects</span></h4>
<p>A pointer to object can be initialized with the result of the <a href="operator_member_access.html" title="c/language/operator member access">address-of operator</a> applied to an expression of object type (which may be incomplete):
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="kw4">int</span> n<span class="sy4">;</span>
<span class="kw4">int</span> <span class="sy2">*</span>np <span class="sy1">=</span> <span class="sy3">&amp;</span>n<span class="sy4">;</span> <span class="co1">// pointer to int</span>
<span class="kw4">int</span> <span class="sy2">*</span><span class="kw4">const</span> <span class="sy2">*</span>npp <span class="sy1">=</span> <span class="sy3">&amp;</span>np<span class="sy4">;</span> <span class="co1">// non-const pointer to const pointer to non-const int</span>
&#160;
<span class="kw4">int</span> a<span class="br0">&#91;</span><span class="nu0">2</span><span class="br0">&#93;</span><span class="sy4">;</span>
<span class="kw4">int</span> <span class="br0">&#40;</span><span class="sy2">*</span>ap<span class="br0">&#41;</span><span class="br0">&#91;</span><span class="nu0">2</span><span class="br0">&#93;</span> <span class="sy1">=</span> <span class="sy3">&amp;</span>a<span class="sy4">;</span> <span class="co1">// pointer to array of int</span>
&#160;
<span class="kw1">struct</span> S <span class="br0">&#123;</span> <span class="kw4">int</span> n<span class="sy4">;</span> <span class="br0">&#125;</span> s <span class="sy1">=</span> <span class="br0">&#123;</span><span class="nu0">1</span><span class="br0">&#125;</span>
<span class="kw4">int</span><span class="sy2">*</span> sp <span class="sy1">=</span> <span class="sy3">&amp;</span>s.<span class="me1">n</span><span class="sy4">;</span> <span class="co1">// pointer to the int that is a member of s</span></pre></div></div>
<p>Pointers may appear as operands to the <a href="operator_member_access.html#Dereference" title="c/language/operator member access">indirection operator</a> (unary <code><b>*</b></code>), which returns <a href="value_category.html" title="c/language/value category">the lvalue</a> identifying the pointed-to object:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="kw4">int</span> n<span class="sy4">;</span>
<span class="kw4">int</span><span class="sy2">*</span> p <span class="sy1">=</span> <span class="sy3">&amp;</span>n<span class="sy4">;</span>     <span class="co1">// pointer p is pointing to n</span>
<span class="sy2">*</span>p <span class="sy1">=</span> <span class="nu0">7</span><span class="sy4">;</span>         <span class="co1">// stores 7 in n</span>
<a href="../io/fprintf.html"><span class="kw851">printf</span></a><span class="br0">&#40;</span><span class="st0">&quot;%d<span class="es1">\n</span>&quot;</span>, <span class="sy2">*</span>p<span class="br0">&#41;</span><span class="sy4">;</span> <span class="co1">// lvalue-to-rvalue conversion reads the value from n</span></pre></div></div>
<p>Pointers to objects of <a href="struct.html" title="c/language/struct">struct</a> and <a href="union.html" title="c/language/union">union</a> type may also appear as the left-hand operands of the <a href="operator_member_access.html" title="c/language/operator member access">member access through pointer</a> operator <code><b>-&gt;</b></code>.
</p><p>Because of the <a href="array.html" title="c/language/array">array-to-pointer</a> implicit conversion, pointer to the first element of an array can be initialized with an expression of array type:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="kw4">int</span> a<span class="br0">&#91;</span><span class="nu0">2</span><span class="br0">&#93;</span><span class="sy4">;</span>
<span class="kw4">int</span> <span class="sy2">*</span>p <span class="sy1">=</span> a<span class="sy4">;</span> <span class="co1">// pointer to a[0]</span>
&#160;
<span class="kw4">int</span> b<span class="br0">&#91;</span><span class="nu0">3</span><span class="br0">&#93;</span><span class="br0">&#91;</span><span class="nu0">3</span><span class="br0">&#93;</span><span class="sy4">;</span>
<span class="kw4">int</span> <span class="br0">&#40;</span><span class="sy2">*</span>row<span class="br0">&#41;</span><span class="br0">&#91;</span><span class="nu0">3</span><span class="br0">&#93;</span> <span class="sy1">=</span> b<span class="sy4">;</span> <span class="co1">// pointer to b[0]</span></pre></div></div>
<p>Certain <a href="operator_arithmetic.html" title="c/language/operator arithmetic">addition, subtraction</a>, <a href="operator_assignment.html" title="c/language/operator assignment">compound assignment</a>, <a href="operator_incdec.html" title="c/language/operator incdec">increment, and decrement</a> operators are defined for pointers to elements of arrays.
</p><p><a href="operator_comparison.html" title="c/language/operator comparison">Comparison operators</a> are defined for pointers to objects in some situations: two pointers that represent the same address compare equal, two null pointer values compare equal, pointers to elements of the same array compare the same as the array indexes of those elements, and pointers to struct members compare in order of declaration of those members.
</p><p>Many implementations also provide <a href="http://en.wikipedia.com/wiki/Total_order#Strict_total_order" class="extiw" title="enwiki:Total order">strict total ordering</a> of pointers of random origin, e.g. if they are implemented as addresses within continuous ("flat") virtual address space. 
</p>
<h4><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=edit&amp;section=4" title="Edit section: Pointers to functions">edit</a>]</span> <span class="mw-headline" id="Pointers_to_functions">Pointers to functions</span></h4>
<p>A pointer to function can be initialized with an address of a function. Because of the <a href="conversion.html" title="c/language/conversion">function-to-pointer</a> conversion, the address-of operator is optional:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="kw4">void</span> f<span class="br0">&#40;</span><span class="kw4">int</span><span class="br0">&#41;</span><span class="sy4">;</span>
<span class="kw4">void</span> <span class="br0">&#40;</span><span class="sy2">*</span>pf1<span class="br0">&#41;</span><span class="br0">&#40;</span><span class="kw4">int</span><span class="br0">&#41;</span> <span class="sy1">=</span> <span class="sy3">&amp;</span>f<span class="sy4">;</span>
<span class="kw4">void</span> <span class="br0">&#40;</span><span class="sy2">*</span>pf2<span class="br0">&#41;</span><span class="br0">&#40;</span><span class="kw4">int</span><span class="br0">&#41;</span> <span class="sy1">=</span> f<span class="sy4">;</span> <span class="co1">// same as &amp;f</span></pre></div></div>
<p>Unlike functions, pointers to functions are objects and thus can be stored in arrays, copied, assigned, passed to other functions as arguments, etc.
</p><p>A pointer to function can be used on the left-hand side of the <a href="operator_other.html#Function_call" title="c/language/operator other">function call operator</a>; this invokes the pointed-to function:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include &lt;stdio.h&gt;</span>
<span class="kw4">int</span> f<span class="br0">&#40;</span><span class="kw4">int</span> n<span class="br0">&#41;</span>
<span class="br0">&#123;</span>
    <a href="../io/fprintf.html"><span class="kw851">printf</span></a><span class="br0">&#40;</span><span class="st0">&quot;%d<span class="es1">\n</span>&quot;</span>, n<span class="br0">&#41;</span><span class="sy4">;</span>
    <span class="kw1">return</span> n<span class="sy2">*</span>n<span class="sy4">;</span>
<span class="br0">&#125;</span>
<span class="kw4">int</span> main<span class="br0">&#40;</span><span class="kw4">void</span><span class="br0">&#41;</span>
<span class="br0">&#123;</span>
    <span class="kw4">int</span> <span class="br0">&#40;</span><span class="sy2">*</span>p<span class="br0">&#41;</span><span class="br0">&#40;</span><span class="kw4">int</span><span class="br0">&#41;</span> <span class="sy1">=</span> f<span class="sy4">;</span>
    <span class="kw4">int</span> x <span class="sy1">=</span> p<span class="br0">&#40;</span><span class="nu0">7</span><span class="br0">&#41;</span><span class="sy4">;</span>
<span class="br0">&#125;</span></pre></div></div>
<p>Dereferencing a function pointer yields the function designator for the pointed-to function:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="kw4">int</span> f<span class="br0">&#40;</span><span class="br0">&#41;</span><span class="sy4">;</span>
<span class="kw4">int</span> <span class="br0">&#40;</span><span class="sy2">*</span>p<span class="br0">&#41;</span><span class="br0">&#40;</span><span class="br0">&#41;</span> <span class="sy1">=</span> f<span class="sy4">;</span>    <span class="co1">// pointer p is pointing to f</span>
<span class="br0">&#40;</span><span class="sy2">*</span>p<span class="br0">&#41;</span><span class="br0">&#40;</span><span class="br0">&#41;</span><span class="sy4">;</span> <span class="co1">// function f invoked through the function designator</span>
p<span class="br0">&#40;</span><span class="br0">&#41;</span><span class="sy4">;</span>    <span class="co1">// function f invoked directly through the pointer</span></pre></div></div>
<p><a href="operator_comparison.html" title="c/language/operator comparison">Equality comparison operators</a> are defined for pointers to functions (they compare equal if pointing to the same function).
</p>
<h4><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=edit&amp;section=5" title="Edit section: Pointers to void">edit</a>]</span> <span class="mw-headline" id="Pointers_to_void">Pointers to void</span></h4>
<p>Pointer to object of any type can be <a href="conversion.html" title="c/language/conversion">implicitly converted</a> to pointer to <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">void</span></span></span> (optionally <a href="const.html" title="c/language/const">const</a> or <a href="volatile.html" title="c/language/volatile">volatile</a>-qualified), and vice versa:
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="kw4">int</span> n<span class="sy1">=</span><span class="nu0">1</span>, <span class="sy2">*</span>p<span class="sy1">=</span><span class="sy3">&amp;</span>n<span class="sy4">;</span>
<span class="kw4">void</span><span class="sy2">*</span> pv <span class="sy1">=</span> p<span class="sy4">;</span> <span class="co1">// int* to void*</span>
<span class="kw4">int</span><span class="sy2">*</span> p2 <span class="sy1">=</span> pv<span class="sy4">;</span> <span class="co1">// void* to int*</span>
<a href="../io/fprintf.html"><span class="kw851">printf</span></a><span class="br0">&#40;</span><span class="st0">&quot;%d<span class="es1">\n</span>&quot;</span>, <span class="sy2">*</span>p2<span class="br0">&#41;</span><span class="sy4">;</span> <span class="co1">// prints 1</span></pre></div></div>
<p>Pointers to void are used to pass objects of unknown type, which is common in generic interfaces: <span class="t-lc"><a href="../memory/malloc.html" title="c/memory/malloc">malloc</a></span> returns <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">void</span><span class="sy2">*</span></span></span>, <span class="t-lc"><a href="../algorithm/qsort.html" title="c/algorithm/qsort">qsort</a></span> expects a user-provided callback that accepts two <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">const</span> <span class="kw4">void</span><span class="sy2">*</span></span></span> arguments. <a rel="nofollow" class="external text" href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/pthread_create.html">pthread_create</a> expects a user-provided callback that accepts and returns <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">void</span><span class="sy2">*</span></span></span>. In all cases, it is the caller's responsibility to convert the pointer to the correct type before use.
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=edit&amp;section=6" title="Edit section: Null pointers">edit</a>]</span> <span class="mw-headline" id="Null_pointers">Null pointers</span></h3>
<p>Pointers of every type have a special value known as <i>null pointer value</i> of that type. A pointer whose value is null does not point to an object or a function (dereferencing a null pointer is undefined behavior), and compares equal to all pointers of the same type whose value is also <i>null</i>.
</p><p>To initialize a pointer to null or to assign the null value to an existing pointer, a null pointer constant (<span class="t-lc"><a href="../types/NULL.html" title="c/types/NULL">NULL</a></span>, or any other integer constant with the value zero) may be used. <a href="initialization.html" title="c/language/initialization">static initialization</a> also initializes pointers to their null values.
</p><p>Null pointers can indicate the absence of an object or can be used to indicate other types of error conditions. In general, a function that receives a pointer argument almost always needs to check if the value is null and handle that case differently (for example, <span class="t-lc"><a href="../memory/free.html" title="c/memory/free">free</a></span> does nothing when a null pointer is passed).
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=edit&amp;section=7" title="Edit section: Notes">edit</a>]</span> <span class="mw-headline" id="Notes">Notes</span></h3>
<p>Although any pointer to object <a href="cast.html" title="c/language/cast">can be cast</a> to pointer to object of a different type, dereferencing a pointer to the type different from the declared type of the object is almost always undefined behavior. See <a href="object.html#Strict_aliasing" title="c/language/object">strict aliasing</a> for details.
</p>
 <table class="t-rev-begin">
<tr class="t-rev t-since-c99"><td>
<p>It is possible to indicate to a function that accesses objects through pointers that those pointers do not alias. See <a href="restrict.html" title="c/language/restrict">restrict</a> for details.
</p>
</td>
<td><span class="t-mark-rev t-since-c99">(since C99)</span></td></tr>
</table>
<p>lvalue expressions of array type, when used in most contexts, undergo an <a href="conversion.html" title="c/language/conversion">implicit conversion</a> to the pointer to the first element of the array. See <a href="array.html#Array_to_pointer_conversion" title="c/language/array">array</a> for details.
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="kw4">char</span> <span class="sy2">*</span>str <span class="sy1">=</span> <span class="st0">&quot;abc&quot;</span><span class="sy4">;</span> <span class="co1">// &quot;abc&quot; is a char[4] array, str is a pointer to 'a'</span></pre></div></div>
<p>Pointers to char are often <a href="../string/byte.html" title="c/string/byte">used to represent strings</a>. To represent a valid byte string, a pointer must be pointing at a char that is an element of an array of char, and there must be a char with the value zero at some index greater or equal to the index of the element referenced by the pointer.
</p>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=edit&amp;section=8" title="Edit section: References">edit</a>]</span> <span class="mw-headline" id="References">References</span></h3>
<div class="t-ref-std-11">
<ul><li> C11 standard (ISO/IEC 9899:2011): 
</li></ul>
<dl><dd><ul><li> 6.7.6.1 Pointer declarators (p: 130)
</li></ul>
</dd></dl>
<div class="t-ref-std-c99">
<ul><li> C99 standard (ISO/IEC 9899:1999): 
</li></ul>
<dl><dd><ul><li> 6.7.5.1 Pointer declarators (p: 115-116)
</li></ul>
</dd></dl>
<div class="t-ref-std-c89">
<ul><li> C89/C90 standard (ISO/IEC 9899:1990): 
</li></ul>
<dl><dd><ul><li> 3.5.4.1 Pointer declarators 
</li></ul>
</dd></dl>
</div>
<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=edit&amp;section=9" title="Edit section: See also">edit</a>]</span> <span class="mw-headline" id="See_also">See also</span></h3>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td colspan="2"> <div class="t-dsc-see"><span><a href="../../cpp/language/pointer.html" title="cpp/language/pointer">C++ documentation</a></span> for <span class="t-dsc-see-tt"><span>Pointer declaration</span></span></div>
</td></tr>

</table></div>
</div>

<!-- 
NewPP limit report
Preprocessor visited node count: 3073/1000000
Preprocessor generated node count: 5516/1000000
Post‐expand include size: 65983/2097152 bytes
Template argument size: 12210/2097152 bytes
Highest expansion depth: 16/40
Expensive parser function count: 0/100
-->

<!-- Saved in parser cache with key mwiki1-mwiki_en_:pcache:idhash:13950-0!*!0!!en!*!* and timestamp 20150624111216 -->
</div>                    <!-- /bodycontent -->
                                        <!-- printfooter -->
                    <div class="printfooter">
                    Retrieved from "<a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;oldid=79111">http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;oldid=79111</a>"                    </div>
                    <!-- /printfooter -->
                                                            <!-- catlinks -->
                    <div id='catlinks' class='catlinks catlinks-allhidden'></div>                    <!-- /catlinks -->
                                                            <div class="visualClear"></div>
                    <!-- debughtml -->
                                        <!-- /debughtml -->
                </div>
                <!-- /bodyContent -->
            </div>
        </div>
        <!-- /content -->
        <!-- footer -->
        <div id="cpp-footer-base" class="noprint">
            <div id="footer">
                        <div id="cpp-navigation">
            <h5>Navigation</h5>
            <ul>
<li id="n-Support-us"><a href="http://www.cppreference.com/support" rel="nofollow">Support us</a></li><li id="n-recentchanges"><a href="http://en.cppreference.com/w/Special:RecentChanges" title="A list of recent changes in the wiki [r]" accesskey="r">Recent changes</a></li><li id="n-FAQ"><a href="http://en.cppreference.com/w/Cppreference:FAQ">FAQ</a></li><li id="n-Offline-version"><a href="http://en.cppreference.com/w/Cppreference:Archives">Offline version</a></li>            </ul>
        </div>
                        <div id="cpp-toolbox">
            <h5><span>Toolbox</span><a href="pointer.html#"></a></h5>
            <ul>
<li id="t-whatlinkshere"><a href="http://en.cppreference.com/w/Special:WhatLinksHere/c/language/pointer" title="A list of all wiki pages that link here [j]" accesskey="j">What links here</a></li><li id="t-recentchangeslinked"><a href="http://en.cppreference.com/w/Special:RecentChangesLinked/c/language/pointer" title="Recent changes in pages linked from this page [k]" accesskey="k">Related changes</a></li><li id="t-upload"><a href="http://upload.cppreference.com/w/Special:Upload" title="Upload files [u]" accesskey="u">Upload file</a></li><li id="t-specialpages"><a href="http://en.cppreference.com/w/Special:SpecialPages" title="A list of all special pages [q]" accesskey="q">Special pages</a></li><li id="t-print"><a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;printable=yes" rel="alternate" title="Printable version of this page [p]" accesskey="p">Printable version</a></li><li id="t-permalink"><a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;oldid=79111" title="Permanent link to this revision of the page">Permanent link</a></li><li id="t-info"><a href="http://en.cppreference.com/mwiki/index.php?title=c/language/pointer&amp;action=info">Page information</a></li>            </ul>
        </div>
                        <div id="cpp-languages">
            <div><ul><li>In other languages</li></ul></div>
            <div><ul>
<li class="interwiki-ar"><a href="http://ar.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="ar" hreflang="ar">العربية</a></li><li class="interwiki-cs"><a href="http://cs.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="cs" hreflang="cs">Česky</a></li><li class="interwiki-de"><a href="http://de.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="de" hreflang="de">Deutsch</a></li><li class="interwiki-es"><a href="http://es.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="es" hreflang="es">Español</a></li><li class="interwiki-fr"><a href="http://fr.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="fr" hreflang="fr">Français</a></li><li class="interwiki-it"><a href="http://it.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="it" hreflang="it">Italiano</a></li><li class="interwiki-ja"><a href="http://ja.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="ja" hreflang="ja">日本語</a></li><li class="interwiki-ko"><a href="http://ko.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="ko" hreflang="ko">한국어</a></li><li class="interwiki-pl"><a href="http://pl.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="pl" hreflang="pl">Polski</a></li><li class="interwiki-pt"><a href="http://pt.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="pt" hreflang="pt">Português</a></li><li class="interwiki-ru"><a href="http://ru.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="ru" hreflang="ru">Русский</a></li><li class="interwiki-tr"><a href="http://tr.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="tr" hreflang="tr">Türkçe</a></li><li class="interwiki-zh"><a href="http://zh.cppreference.com/w/c/language/pointer" title="c/language/pointer" lang="zh" hreflang="zh">中文</a></li>            </ul></div>
        </div>
            <ul id="footer-info">
                                    <li id="footer-info-lastmod"> This page was last modified on 24 June 2015, at 04:12.</li>
                                    <li id="footer-info-viewcount">This page has been accessed 1,412 times.</li>
                            </ul>
                    <ul id="footer-places">
                                    <li id="footer-places-privacy"><a href="http://en.cppreference.com/w/Cppreference:Privacy_policy" title="Cppreference:Privacy policy">Privacy policy</a></li>
                                    <li id="footer-places-about"><a href="http://en.cppreference.com/w/Cppreference:About" title="Cppreference:About">About cppreference.com</a></li>
                                    <li id="footer-places-disclaimer"><a href="http://en.cppreference.com/w/Cppreference:General_disclaimer" title="Cppreference:General disclaimer">Disclaimers</a></li>
                            </ul>
                                    <ul id="footer-icons" class="noprint">
                                    <li id="footer-poweredbyico">
                                            <a href="http://www.mediawiki.org/"><img src="../../../mwiki/skins/common/images/poweredby_mediawiki_88x31.png" alt="Powered by MediaWiki" width="88" height="31" /></a>                                            <a href="http://qbnz.com/highlighter/"><img src="../../../../upload.cppreference.com/mwiki/images/2/2b/powered_by_geshi_88x31.png" alt="Powered by GeSHi" height="31" width="88" /></a>                                            <a href="http://www.tigertech.net/referral/cppreference.com"><img src="../../../../upload.cppreference.com/mwiki/images/9/94/powered_by_tigertech_88x31.png" alt="Hosted by Tiger Technologies" height="31" width="88" /></a>                                        </li>
                                </ul>
                        <div style="clear:both">
            </div>
            </div>
        </div>
        <!-- /footer -->
        <script>if(window.mw){
mw.loader.state({"site":"loading","user":"missing","user.groups":"ready"});
}</script>
<script src="../../../mwiki/load.php%3Fdebug=false&amp;lang=en&amp;modules=skins.cppreference2&amp;only=scripts&amp;skin=cppreference2&amp;*"></script>
<script>if(window.mw){
mw.loader.load(["mediawiki.action.view.postEdit","mediawiki.user","mediawiki.page.ready","mediawiki.searchSuggest","mediawiki.hidpi","ext.gadget.ColiruCompiler"], null, true);
}</script>
<script src="../../../mwiki/load.php%3Fdebug=false&amp;lang=en&amp;modules=site&amp;only=scripts&amp;skin=cppreference2&amp;*"></script>
<script type="text/javascript">
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));
</script>
<script type="text/javascript">
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-2828341-1']);
_gaq.push(['_setDomainName', 'cppreference.com']);
_gaq.push(['_trackPageview']);
</script><!-- Served in 0.084 secs. -->
	</body>
<!-- Cached 20150624131226 -->
</html>