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<title>GNU Octave: Strings</title>

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<a name="Strings"></a>
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<p>
Next: <a href="Data-Containers.html#Data-Containers" accesskey="n" rel="next">Data Containers</a>, Previous: <a href="Numeric-Data-Types.html#Numeric-Data-Types" accesskey="p" rel="prev">Numeric Data Types</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="Strings-1"></a>
<h2 class="chapter">5 Strings</h2>
<a name="index-strings-1"></a>
<a name="index-character-strings-1"></a>
<a name="index-_0022-1"></a>
<a name="index-_0027-1"></a>

<p>A <em>string constant</em> consists of a sequence of characters enclosed in
either double-quote or single-quote marks.  For example, both of the
following expressions
</p>
<div class="example">
<pre class="example">&quot;parrot&quot;
'parrot'
</pre></div>

<p>represent the string whose contents are &lsquo;<samp>parrot</samp>&rsquo;.  Strings in
Octave can be of any length.
</p>
<p>Since the single-quote mark is also used for the transpose operator
(see <a href="Arithmetic-Ops.html#Arithmetic-Ops">Arithmetic Ops</a>) but double-quote marks have no other purpose in Octave,
it is best to use double-quote marks to denote strings.
</p>
<p>Strings can be concatenated using the notation for defining matrices.  For
example, the expression 
</p> 
<div class="example">
<pre class="example">[ &quot;foo&quot; , &quot;bar&quot; , &quot;baz&quot; ]
</pre></div>

<p>produces the string whose contents are &lsquo;<samp>foobarbaz</samp>&rsquo;.  See <a href="Numeric-Data-Types.html#Numeric-Data-Types">Numeric Data Types</a>, for more information about creating matrices.
</p>
<table class="menu" border="0" cellspacing="0">
<tr><td align="left" valign="top">&bull; <a href="Escape-Sequences-in-String-Constants.html#Escape-Sequences-in-String-Constants" accesskey="1">Escape Sequences in String Constants</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="Character-Arrays.html#Character-Arrays" accesskey="2">Character Arrays</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="Creating-Strings.html#Creating-Strings" accesskey="3">Creating Strings</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="Comparing-Strings.html#Comparing-Strings" accesskey="4">Comparing Strings</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="Manipulating-Strings.html#Manipulating-Strings" accesskey="5">Manipulating Strings</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="String-Conversions.html#String-Conversions" accesskey="6">String Conversions</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="Character-Class-Functions.html#Character-Class-Functions" accesskey="7">Character Class Functions</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
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