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58<span id="Declaring-Arrays-and-Pointers"></span><div class="header">
59<p>
60Next: <a href="Combining-Variable-Declarations.html" accesskey="n" rel="next">Combining Variable Declarations</a>, Up: <a href="Variable-Declarations.html" accesskey="u" rel="up">Variable Declarations</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Symbol-Index.html" title="Index" rel="index">Index</a>]</p>
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62<hr>
63<span id="Declaring-Arrays-and-Pointers-1"></span><h4 class="subsection">20.1.1 Declaring Arrays and Pointers</h4>
64<span id="index-declaring-arrays-and-pointers"></span>
65<span id="index-array_002c-declaring-1"></span>
66<span id="index-pointers_002c-declaring"></span>
67
68<p>To declare a variable that is an array, write
69<code><var>variable</var>[<var>length</var>]</code> for <var>decorated-variable</var>:
70</p>
71<div class="example">
72<pre class="example">int foo[5];
73</pre></div>
74
75<p>To declare a variable that has a pointer type, write
76<code>*<var>variable</var></code> for <var>decorated-variable</var>:
77</p>
78<div class="example">
79<pre class="example">struct list_elt *foo;
80</pre></div>
81
82<p>These constructs nest. For instance,
83</p>
84<div class="example">
85<pre class="example">int foo[3][5];
86</pre></div>
87
88<p>declares <code>foo</code> as an array of 3 arrays of 5 integers each,
89</p>
90<div class="example">
91<pre class="example">struct list_elt *foo[5];
92</pre></div>
93
94<p>declares <code>foo</code> as an array of 5 pointers to structures, and
95</p>
96<div class="example">
97<pre class="example">struct list_elt **foo;
98</pre></div>
99
100<p>declares <code>foo</code> as a pointer to a pointer to a structure.
101</p>
102<div class="example">
103<pre class="example">int **(*foo[30])(int, double);
104</pre></div>
105
106<p>declares <code>foo</code> as an array of 30 pointers to functions
107(see <a href="Function-Pointers.html">Function Pointers</a>), each of which must accept two arguments
108(one <code>int</code> and one <code>double</code>) and return type <code>int **</code>.
109</p>
110<div class="example">
111<pre class="example">void
112bar (int size)
113{
114 int foo[size];
115 <span class="roman">&hellip;</span>
116}
117</pre></div>
118
119<p>declares <code>foo</code> as an array of integers with a size specified at
120run time when the function <code>bar</code> is called.
121</p>
122
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