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fill [C++ Reference]
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<h2><a name="fill" id="fill">fill</a></h2>
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<p>
Syntax:
</p>
<pre class="c code c++" style="font-family:monospace;"> <span class="co2">#include <algorithm></span>
<span class="kw4">void</span> fill<span class="br0">(</span> forward_iterator start<span class="sy0">,</span> forward_iterator end<span class="sy0">,</span> <span class="kw4">const</span> TYPE<span class="sy0">&</span> val <span class="br0">)</span><span class="sy0">;</span></pre>
<p>
The function fill() assigns val to all of the elements between start and end.
</p>
<p>
For example, the following code uses fill() to set all of the elements of a
vector of integers to -1:
</p>
<pre class="c code c++" style="font-family:monospace;"> vector<span class="sy0"><</span>int<span class="sy0">></span> v1<span class="sy0">;</span>
<span class="kw1">for</span><span class="br0">(</span> <span class="kw4">int</span> i <span class="sy0">=</span> <span class="nu0">0</span><span class="sy0">;</span> i <span class="sy0"><</span> <span class="nu0">10</span><span class="sy0">;</span> i<span class="sy0">++</span> <span class="br0">)</span> <span class="br0">{</span>
v1.<span class="me1">push_back</span><span class="br0">(</span> i <span class="br0">)</span><span class="sy0">;</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">"Before, v1 is: "</span><span class="sy0">;</span>
<span class="kw1">for</span><span class="br0">(</span> vector<span class="sy0"><</span>int<span class="sy0">>::</span><span class="me2">size_type</span> i <span class="sy0">=</span> <span class="nu0">0</span><span class="sy0">;</span> i <span class="sy0"><</span> v1.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span><span class="sy0">;</span> i<span class="sy0">++</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> v1<span class="br0">[</span>i<span class="br0">]</span> <span class="sy0"><<</span> <span class="st0">" "</span><span class="sy0">;</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> endl<span class="sy0">;</span>
fill<span class="br0">(</span> v1.<span class="me1">begin</span><span class="br0">(</span><span class="br0">)</span><span class="sy0">,</span> v1.<span class="me1">end</span><span class="br0">(</span><span class="br0">)</span><span class="sy0">,</span> <span class="sy0">-</span>1 <span class="br0">)</span><span class="sy0">;</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">"After, v1 is: "</span><span class="sy0">;</span>
<span class="kw1">for</span><span class="br0">(</span> vector<span class="sy0"><</span>int<span class="sy0">>::</span><span class="me2">size_type</span> i <span class="sy0">=</span> <span class="nu0">0</span><span class="sy0">;</span> i <span class="sy0"><</span> v1.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span><span class="sy0">;</span> i<span class="sy0">++</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> v1<span class="br0">[</span>i<span class="br0">]</span> <span class="sy0"><<</span> <span class="st0">" "</span><span class="sy0">;</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> endl<span class="sy0">;</span></pre>
<p>
When run, the above code displays:
</p>
<pre class="code">
Before, v1 is: 0 1 2 3 4 5 6 7 8 9
After, v1 is: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1</pre>
<p>
Related Topics: <a href="../../stl/algorithm/fill_n.html" class="wikilink1" title="stl:algorithm:fill_n">fill_n</a>, <a href="../../stl/algorithm/generate.html" class="wikilink1" title="stl:algorithm:generate">generate</a>, <a href="../../stl/algorithm/transform.html" class="wikilink1" title="stl:algorithm:transform">transform</a>
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