Understanding the rand() operation
<p>At <a href="http://www.cplusplus.com/reference/clibrary/cstdlib/rand/" rel="nofollow">http://www.cplusplus.com/reference/clibrary/cstdlib/rand/</a> , I read the following : This algorithm uses a seed to generate the series, which should be initialized to some distinctive value using srand.</p>

<p>What does seed mean and how does rand() use seed to generate the series?</p>
