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find.html
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find.html
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find [C++ Reference]
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<h2><a name="find" id="find">find</a></h2>
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<p>
Syntax:
</p>
<pre class="c code c++" style="font-family:monospace;"> <span class="co2">#include <string></span>
size_type find<span class="br0">(</span> <span class="kw4">const</span> string<span class="sy0">&</span> str<span class="sy0">,</span> size_type index <span class="sy0">=</span> <span class="nu19">0</span> <span class="br0">)</span> <span class="kw4">const</span>;
size_type find<span class="br0">(</span> <span class="kw4">const</span> <span class="kw4">char</span><span class="sy0">*</span> str<span class="sy0">,</span> size_type index <span class="sy0">=</span> <span class="nu19">0</span> <span class="br0">)</span> <span class="kw4">const</span>;
size_type find<span class="br0">(</span> <span class="kw4">const</span> <span class="kw4">char</span><span class="sy0">*</span> str<span class="sy0">,</span> size_type index<span class="sy0">,</span> size_type length <span class="br0">)</span> <span class="kw4">const</span>;
size_type find<span class="br0">(</span> <span class="kw4">char</span> ch<span class="sy0">,</span> size_type index <span class="sy0">=</span> <span class="nu19">0</span> <span class="br0">)</span> <span class="kw4">const</span>;</pre>
<p>
The function find() returns either:
</p>
<ul>
<li class="level1"><div class="li"> the first occurrence of str within the current string, starting at index, or string::npos if nothing is found</div>
</li>
<li class="level1"><div class="li"> the first length characters of str within the current string, starting at index, or string::npos if nothing is found.</div>
</li>
</ul>
<p>
For example:
</p>
<pre class="c code c++" style="font-family:monospace;"> <span class="kw4">string</span> str1<span class="br0">(</span> <span class="st0">"Alpha Beta Gamma Delta"</span> <span class="br0">)</span>;
<span class="kw4">string</span><span class="sy0">::</span><span class="me2">size_type</span> loc <span class="sy0">=</span> str1.<span class="me1">find</span><span class="br0">(</span> <span class="st0">"Omega"</span><span class="sy0">,</span> <span class="nu19">0</span> <span class="br0">)</span>;
<span class="kw1">if</span><span class="br0">(</span> loc <span class="sy0">!=</span> <span class="kw4">string</span><span class="sy0">::</span><span class="me2">npos</span> <span class="br0">)</span> <span class="br0">{</span>
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/cout.html"><span class="kw3">cout</span></a> <span class="sy0"><<</span> <span class="st0">"Found Omega at "</span> <span class="sy0"><<</span> loc <span class="sy0"><<</span> endl;
<span class="br0">}</span> <span class="kw1">else</span> <span class="br0">{</span>
<a href="http://www.opengroup.org/onlinepubs/009695399/functions/cout.html"><span class="kw3">cout</span></a> <span class="sy0"><<</span> <span class="st0">"Didn't find Omega"</span> <span class="sy0"><<</span> endl;
<span class="br0">}</span></pre>
<p>
Related Topics: <a href="../string/find_first_not_of.html" class="wikilink1" title="string:find_first_not_of">find_first_not_of</a>, <a href="../string/find_first_of.html" class="wikilink1" title="string:find_first_of">find_first_of</a>, <a href="../string/find_last_not_of.html" class="wikilink1" title="string:find_last_not_of">find_last_not_of</a>, <a href="../string/find_last_of.html" class="wikilink1" title="string:find_last_of">find_last_of</a>, <a href="../string/rfind.html" class="wikilink1" title="string:rfind">rfind</a>
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