/
union.html
102 lines (77 loc) · 3.84 KB
/
union.html
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
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"
lang="en" dir="ltr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>
union [C++ Reference]
</title>
<meta name="generator" content="DokuWiki Release 2009-02-14b" />
<meta name="robots" content="index,follow" />
<meta name="date" content="2008-10-14T15:42:05-0700" />
<meta name="keywords" content="keywords,union" />
<link rel="search" type="application/opensearchdescription+xml" href="/wiki/lib/exe/opensearch.php" title="C++ Reference" />
<link rel="start" href="/wiki/" />
<link rel="contents" href="/wiki/keywords/union?do=index" title="Index" />
<link rel="alternate" type="application/rss+xml" title="Recent Changes" href="/wiki/feed.php" />
<link rel="alternate" type="application/rss+xml" title="Current Namespace" href="/wiki/feed.php?mode=list&ns=keywords" />
<link rel="alternate" type="application/wiki" title="Edit this page" href="/wiki/keywords/union?do=edit" />
<link rel="alternate" type="text/html" title="Plain HTML" href="/wiki/_export/xhtml/keywords/union" />
<link rel="alternate" type="text/plain" title="Wiki Markup" href="/wiki/_export/raw/keywords/union" />
<link rel="stylesheet" media="all" type="text/css" href="/wiki/lib/exe/css.php?s=all&t=custom1" />
<link rel="stylesheet" media="screen" type="text/css" href="/wiki/lib/exe/css.php?t=custom1" />
<link rel="stylesheet" media="print" type="text/css" href="/wiki/lib/exe/css.php?s=print&t=custom1" />
<script type="text/javascript" charset="utf-8" src="/wiki/lib/exe/js.php?edit=0&write=1" ></script>
<link rel="shortcut icon" href="/wiki/lib/tpl/custom1/images/favicon.png" />
</head>
<body>
<div class="dokuwiki">
<div class="stylehead">
<div class="breadcrumbs">
<span class="bchead">You are here: </span><a href="../start.html" title="start">C++ Reference</a> » <a href="../keywords/start.html" title="keywords:start">C++ Keywords</a> » <a href="../keywords/union.html" title="keywords:union">union</a> </div>
</div>
<div class="page">
<script src="http://www.google-analytics.com/urchin.js" type="text/javascript">
</script>
<script type="text/javascript">
_uacct = "UA-2828341-1";
urchinTracker();
</script>
<!-- wikipage start -->
<h2><a name="union" id="union">union</a></h2>
<div class="level2">
<p>
Syntax:
</p>
<pre class="c code c++" style="font-family:monospace;"> <span class="kw4">union</span> union<span class="sy0">-</span>name <span class="br0">{</span>
public<span class="sy0">-</span>members<span class="sy0">-</span>list;
private<span class="sy0">:</span>
private<span class="sy0">-</span>members<span class="sy0">-</span>list;
<span class="br0">}</span> object<span class="sy0">-</span>list;</pre>
<p>
A union is like a class, except that all members of a union share the same
memory location and are by default public rather than private. For example:
</p>
<pre class="c code c++" style="font-family:monospace;"> <span class="kw4">union</span> Data <span class="br0">{</span>
<span class="kw4">int</span> i;
<span class="kw4">char</span> c;
<span class="br0">}</span>;</pre>
<p>
Related Topics: <a href="../keywords/class.html" class="wikilink1" title="keywords:class">class</a>, <a href="../keywords/struct.html" class="wikilink1" title="keywords:struct">struct</a>
</p>
</div>
<!-- wikipage stop -->
</div>
<div class="clearer"> </div>
<div class="stylefoot">
<div class="meta">
<div class="user">
</div>
<!--
<div class="doc">
keywords/union.txt · Last modified: 10/14/2008 15:42 (external edit) </div>
-->
</div>
</div></div></body>
</html>