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<div class="title">STRNCMP String Compare Function To Length N </div> </div>
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<div class="textblock"><p>Section: <a class="el" href="sec_string.html">String Functions</a> </p>
<h1><a class="anchor" id="USAGE"></a>
USAGE</h1>
<p>Compares two strings for equality, but only looks at the first N characters from each string. The general syntax for its use is </p>
<pre class="fragment"> p = strncmp(x,y,n)
</pre><p> where <code>x</code> and <code>y</code> are two strings. Returns <code>true</code> if <code>x</code> and <code>y</code> are each at least <code>n</code> characters long, and if the first <code>n</code> characters from each string are the same. Otherwise, it returns <code>false</code>. In the second form, <code>strncmp</code> can be applied to a cell array of strings. The syntax for this form is </p>
<pre class="fragment"> p = strncmp(cellstra,cellstrb,n)
</pre><p> where <code>cellstra</code> and <code>cellstrb</code> are cell arrays of a strings to compare. Also, you can also supply a character matrix as an argument to <code>strcmp</code>, in which case it will be converted via <code>cellstr</code> (so that trailing spaces are removed), before being compared. </p>
<h1><a class="anchor" id="Example"></a>
Example</h1>
<p>The following piece of code compares two strings:</p>
<pre class="fragment">--> x1 = 'astring';
--> x2 = 'bstring';
--> x3 = 'astring';
--> strncmp(x1,x2,4)
ans =
0
--> strncmp(x1,x3,4)
ans =
1
</pre><p>Here we use a cell array strings</p>
<pre class="fragment">--> x = {'ast','bst',43,'astr'}
x =
[ast] [bst] [43] [astr]
--> p = strncmp(x,'ast',3)
p =
1 0 0 1
</pre><p>Here we compare two cell arrays of strings</p>
<pre class="fragment">--> strncmp({'this','is','a','pickle'},{'think','is','to','pickle'},3)
ans =
1 0 0 1
</pre><p>Finally, the case where one of the arguments is a matrix string</p>
<pre class="fragment">--> strncmp({'this','is','a','pickle'},['peter ';'piper ';'hated ';'pickle'],4);
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