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📁 《Big C++ 》Third Edition电子书和代码全集-Part1

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<h2><font color="#009999">17.3  Unary Arithmetic Operators</font></h2>
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<ul>
	<li> <tt>+ - * &amp;</tt> have both binary and unary forms</li>
	<li>To overload unary form, reduce the number of parameters by one</li>
	<li><b>E.g.:</b>
		<blockquote>
<pre>Fraction operator-(const Fraction&amp; value)
{
   Fraction result(-value.numerator(), value.denominator());
   return result;
}</pre>
		</blockquote>
	</li>
	<li>A unary operator defined as a member function takes no arguments
		(sect. 17.6)</li>
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