how to get current date time of the system in seconds
<p>how can I get current date time of the systems in seconds in C++?</p>

<p>I tried this one:</p>

<pre><code>struct tm mytm = { 0 };
time_t result;

result = mktime(&amp;mytm);

printf("%lld\n", (long long) result); 
</code></pre>

<p>but I got: -1?</p>

<p>Thanks in advance.</p>
