How to keep alive a program in C++?
<p>I'm using <code>Visual C++ 2010 Express</code> and I just started learning <code>C++</code>. </p>

<p>So when I want to run this code: </p>

<pre><code>#include &lt;iostream&gt;
using namespace std;

int main(){
    cout &lt;&lt; "Hello World! ";
    return 0;
}
</code></pre>

<p>It works, but the program exits immediately after I started it, how should I keep the program alive?</p>
