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counter.cpp.html
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counter.cpp.html
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<!DOCTYPE HTML>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="GENERATOR" content="GNU source-highlight
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite">
<title>counter.cpp</title>
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<pre><b><span style="color:#000080">#include</span></b> <span style="color:#FF0000">"timer.h"</span>
<b><span style="color:#000080">#include</span></b> <span style="color:#FF0000"><iostream></span>
<b><span style="color:#0000FF">using</span></b> <b><span style="color:#0000FF">namespace</span></b> std<span style="color:#990000">;</span>
<i><span style="color:#9A1900">// this main method just counts the time taken to iterate 1 billion</span></i>
<i><span style="color:#9A1900">// times through an idle loop</span></i>
<span style="color:#009900">int</span> <b><span style="color:#000000">main</span></b><span style="color:#990000">(</span><span style="color:#009900">int</span> argc<span style="color:#990000">,</span> <span style="color:#009900">char</span><span style="color:#990000">**</span> argv<span style="color:#990000">)</span> <span style="color:#FF0000">{</span>
<i><span style="color:#9A1900">// check the number of parameters</span></i>
<b><span style="color:#0000FF">if</span></b> <span style="color:#990000">(</span>argc <span style="color:#990000">!=</span> <span style="color:#993399">2</span><span style="color:#990000">)</span> <span style="color:#FF0000">{</span>
cerr <span style="color:#990000"><<</span> <span style="color:#FF0000">"usage: "</span> <span style="color:#990000"><<</span> argv<span style="color:#990000">[</span><span style="color:#993399">0</span><span style="color:#990000">]</span> <span style="color:#990000"><<</span> <span style="color:#FF0000">" <iterations>"</span> <span style="color:#990000"><<</span> endl<span style="color:#990000">;</span>
<b><span style="color:#0000FF">return</span></b> <span style="color:#993399">1</span><span style="color:#990000">;</span>
<span style="color:#FF0000">}</span>
<i><span style="color:#9A1900">// convert the second parameter to a int</span></i>
<span style="color:#009900">int</span> e <span style="color:#990000">=</span> <b><span style="color:#000000">stoi</span></b><span style="color:#990000">(</span>argv<span style="color:#990000">[</span><span style="color:#993399">1</span><span style="color:#990000">]);</span>
<i><span style="color:#9A1900">// compute 10^e</span></i>
<span style="color:#009900">long</span> n <span style="color:#990000">=</span> <span style="color:#993399">1</span><span style="color:#990000">;</span>
<b><span style="color:#0000FF">for</span></b> <span style="color:#990000">(</span><span style="color:#009900">int</span> i <span style="color:#990000">=</span> <span style="color:#993399">0</span><span style="color:#990000">;</span> i <span style="color:#990000"><</span> e<span style="color:#990000">;</span> i<span style="color:#990000">++)</span> <span style="color:#FF0000">{</span>
n <span style="color:#990000">*=</span> <span style="color:#993399">10</span><span style="color:#990000">;</span>
<span style="color:#FF0000">}</span>
<span style="color:#008080">timer</span> t<span style="color:#990000">;</span>
t<span style="color:#990000">.</span><b><span style="color:#000000">start</span></b><span style="color:#990000">();</span>
<i><span style="color:#9A1900">// do something that takes some time...</span></i>
<b><span style="color:#0000FF">for</span></b> <span style="color:#990000">(</span><span style="color:#009900">long</span> i <span style="color:#990000">=</span> <span style="color:#993399">0</span><span style="color:#990000">;</span> i <span style="color:#990000"><</span> n<span style="color:#990000">;</span> i<span style="color:#990000">++);</span>
t<span style="color:#990000">.</span><b><span style="color:#000000">stop</span></b><span style="color:#990000">();</span>
cout <span style="color:#990000"><<</span> t <span style="color:#990000"><<</span> endl<span style="color:#990000">;</span>
<span style="color:#FF0000">}</span>
</pre>
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