how to test a string for letters only
<p>how could I test a string against only valid characters like letters a-z?...</p>

<pre><code>string name;

cout &lt;&lt; "Enter your name"
cin &gt;&gt; name;

string letters = "qwertyuiopasdfghjklzxcvbnm";

string::iterator it;

for(it = name.begin(); it = name.end(); it++)
{
  size_t found = letters.find(it);
}
</code></pre>
