converting char to unsigned char
<p>How the conversion works ? For example:
Scope of char[-128, 127],
scope of unsigned char[0, 255]</p>

<pre><code>char x = -128;
unsigned char y = static_cast&lt;unsigned char&gt;(x);
cout&lt;&lt;y; //128
</code></pre>

<p>Why not 0 ?</p>
