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<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
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<meta name="GENERATOR" content="GNU source-highlight 3.1.5
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<title>swapref.cpp</title>
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<pre><tt><i><font color="#9A1900">/* swap() with references</font></i>
<i><font color="#9A1900"> */</font></i>
<b><font color="#000080">#include</font></b> <font color="#FF0000"><iostream></font>
<b><font color="#0000FF">using</font></b> <b><font color="#0000FF">namespace</font></b> std<font color="#990000">;</font>
<font color="#009900">void</font> <b><font color="#000000">swap</font></b><font color="#990000">(</font><font color="#009900">int</font> <font color="#990000">&</font> x<font color="#990000">,</font> <font color="#009900">int</font> <font color="#990000">&</font> y<font color="#990000">)</font> <font color="#FF0000">{</font>
<font color="#009900">int</font> temp <font color="#990000">=</font> x<font color="#990000">;</font>
x <font color="#990000">=</font> y<font color="#990000">;</font>
y <font color="#990000">=</font> temp<font color="#990000">;</font>
<font color="#FF0000">}</font>
<font color="#009900">int</font> <b><font color="#000000">main</font></b><font color="#990000">()</font> <font color="#FF0000">{</font>
<font color="#009900">int</font> a<font color="#990000">=</font><font color="#993399">0</font><font color="#990000">;</font>
<font color="#009900">int</font> b<font color="#990000">=</font><font color="#993399">3</font><font color="#990000">;</font>
cout <font color="#990000"><<</font> <font color="#FF0000">"Before swap(): a: "</font> <font color="#990000"><<</font> a <font color="#990000"><<</font> <font color="#FF0000">"b: "</font> <font color="#990000"><<</font> b <font color="#990000"><<</font> endl<font color="#990000">;</font>
<b><font color="#000000">swap</font></b><font color="#990000">(</font>b<font color="#990000">,</font>a<font color="#990000">);</font>
cout <font color="#990000"><<</font> <font color="#FF0000">"After swap(): a: "</font> <font color="#990000"><<</font> a <font color="#990000"><<</font> <font color="#FF0000">"b: "</font> <font color="#990000"><<</font> b <font color="#990000"><<</font> endl<font color="#990000">;</font>
<b><font color="#0000FF">return</font></b> <font color="#993399">0</font><font color="#990000">;</font>
<font color="#FF0000">}</font>
</tt></pre>
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