How do I make a program from my C++ code?
<p>I found this code:</p>

<pre><code>#include &lt;iostream&gt;

int main()
{
    std::cout &lt;&lt; "Hello World!" &lt;&lt; std::endl;
}
</code></pre>

<p>How do I run this code?
What software do I need?
How do I use that software to make a program?</p>

<p>I thought this would be a good faq for absolute beginners.  Each answer could provide detailed instructions for a particular compiler/environment.</p>
