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    strtok    [C++ Reference]
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<h2><a name="strtok" id="strtok">strtok</a></h2>
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<p>
Syntax:
</p>
<pre class="c code c++" style="font-family:monospace;">    <span class="co2">#include &lt;cstring&gt;</span>
    <span class="kw4">char</span> <span class="sy0">*</span>strtok<span class="br0">&#40;</span> <span class="kw4">char</span> <span class="sy0">*</span>str1<span class="sy0">,</span> <span class="kw4">const</span> <span class="kw4">char</span> <span class="sy0">*</span>str2 <span class="br0">&#41;</span><span class="sy0">;</span></pre>
<p>
The <code>strtok</code> function returns a pointer to the next “token” in <code>str1</code>, where <code>str2
</code>contains the delimiters that determine the token. <code>strtok</code> returns <code>NULL</code> if no
token is found. 
</p>

<p>
In order to convert a string to tokens, the first call to
<code>strtok</code> should have <code>str1</code> point to the string to be tokenized. All calls afterwards should have <code>str1</code> be <code>NULL</code>.
</p>

<p>
For example:
</p>
<pre class="c code c++" style="font-family:monospace;">     <span class="kw4">char</span> str<span class="br0">&#91;</span><span class="br0">&#93;</span> <span class="sy0">=</span> <span class="st0">&quot;now # is the time for all # good men to come to the # aid of their country&quot;</span><span class="sy0">;</span>
     <span class="kw4">char</span> delims<span class="br0">&#91;</span><span class="br0">&#93;</span> <span class="sy0">=</span> <span class="st0">&quot;#&quot;</span><span class="sy0">;</span>
     <span class="kw4">char</span> <span class="sy0">*</span>result <span class="sy0">=</span> NULL<span class="sy0">;</span>
     result <span class="sy0">=</span> strtok<span class="br0">&#40;</span> str<span class="sy0">,</span> delims <span class="br0">&#41;</span><span class="sy0">;</span>
     <span class="kw1">while</span><span class="br0">&#40;</span> result <span class="sy0">!=</span> NULL <span class="br0">&#41;</span> <span class="br0">&#123;</span>
         <a href="http://www.opengroup.org/onlinepubs/009695399/functions/printf.html"><span class="kw3">printf</span></a><span class="br0">&#40;</span> <span class="st0">&quot;result is <span class="es1">\&quot;</span>%s<span class="es1">\&quot;</span><span class="es1">\n</span>&quot;</span><span class="sy0">,</span> result <span class="br0">&#41;</span><span class="sy0">;</span>
         result <span class="sy0">=</span> strtok<span class="br0">&#40;</span> NULL<span class="sy0">,</span> delims <span class="br0">&#41;</span><span class="sy0">;</span>
     <span class="br0">&#125;</span></pre>
<p>
The above code will display the following output:
</p>
<pre class="c code c++" style="font-family:monospace;">     result is <span class="st0">&quot;now &quot;</span>
     result is <span class="st0">&quot; is the time for all &quot;</span>
     result is <span class="st0">&quot; good men to come to the &quot;</span>
     result is <span class="st0">&quot; aid of their country&quot;</span></pre>
<p>
Related Topics: <a href="../../c/string/strchr.html" class="wikilink1" title="c:string:strchr">strchr</a>, <a href="../../c/string/strcspn.html" class="wikilink1" title="c:string:strcspn">strcspn</a>, <a href="../../c/string/strpbrk.html" class="wikilink1" title="c:string:strpbrk">strpbrk</a>, <a href="../../c/string/strrchr.html" class="wikilink1" title="c:string:strrchr">strrchr</a>, <a href="../../c/string/strspn.html" class="wikilink1" title="c:string:strspn">strspn</a>, <a href="../../c/string/strstr.html" class="wikilink1" title="c:string:strstr">strstr</a>
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