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<div class="chapter-level-extent" id="Strings">
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<p>
Next: <a href="Data-Containers.html" accesskey="n" rel="next">Data Containers</a>, Previous: <a href="Numeric-Data-Types.html" accesskey="p" rel="prev">Numeric Data Types</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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<h2 class="chapter" id="Strings-1"><span>5 Strings<a class="copiable-link" href="#Strings-1"> ¶</a></span></h2>
<a class="index-entry-id" id="index-strings-1"></a>
<a class="index-entry-id" id="index-character-strings-1"></a>
<a class="index-entry-id" id="index-_0022-1"></a>
<a class="index-entry-id" id="index-_0027-1"></a>
<p>A <em class="dfn">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">
<div class="group"><pre class="example-preformatted">"parrot"
'parrot'
</pre></div></div>
<p>represent the string whose contents are ‘<samp class="samp">parrot</samp>’. Strings in
Octave can be of any length.
</p>
<p>Since the single-quote mark is also used for the transpose operator
(see <a class="pxref" href="Arithmetic-Ops.html">Arithmetic Operators</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-preformatted">[ "foo" , "bar" , "baz" ]
</pre></div>
<p>produces the string whose contents are ‘<samp class="samp">foobarbaz</samp>’. See <a class="xref" href="Numeric-Data-Types.html">Numeric Data Types</a>, for more information about creating matrices.
</p>
<p>While strings can in principle store arbitrary content, most functions expect
them to be UTF-8 encoded Unicode strings.
</p>
<p>Furthermore, it is possible to create a string without actually writing a text.
The function <code class="code">blanks</code> creates a string of a given length consisting only
of blank characters (ASCII code 32).
</p>
<a class="anchor" id="XREFblanks"></a><span style="display:block; margin-top:-4.5ex;"> </span>
<dl class="first-deftypefn">
<dt class="deftypefn" id="index-blanks"><span><code class="def-type"><var class="var">str</var> =</code> <strong class="def-name">blanks</strong> <code class="def-code-arguments">(<var class="var">n</var>)</code><a class="copiable-link" href="#index-blanks"> ¶</a></span></dt>
<dd><p>Return a string of <var class="var">n</var> blanks.
</p>
<p>For example:
</p>
<div class="example">
<div class="group"><pre class="example-preformatted">blanks (10);
whos ans
⇒
Attr Name Size Bytes Class
==== ==== ==== ===== =====
ans 1x10 10 char
</pre></div></div>
<p><strong class="strong">See also:</strong> <a class="ref" href="Special-Utility-Matrices.html#XREFrepmat">repmat</a>.
</p></dd></dl>
<ul class="mini-toc">
<li><a href="Escape-Sequences-in-String-Constants.html" accesskey="1">Escape Sequences in String Constants</a></li>
<li><a href="Character-Arrays.html" accesskey="2">Character Arrays</a></li>
<li><a href="String-Operations.html" accesskey="3">String Operations</a></li>
<li><a href="Converting-Strings.html" accesskey="4">Converting Strings</a></li>
<li><a href="Character-Class-Functions.html" accesskey="5">Character Class Functions</a></li>
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