how to sum two or three big number?
<blockquote>
  <p><strong>Possible Duplicates:</strong><br>
  <a href="http://stackoverflow.com/questions/2148149/how-to-sum-a-large-number-of-float-number">how to sum a large number of float number?</a><br>
  <a href="http://stackoverflow.com/questions/565150/bigint-in-c">&ldquo;BigInt&rdquo; in C?</a><br>
  <a href="http://stackoverflow.com/questions/1559737/handling-integer-having-large-number-of-digits">handling integer having large number of digits</a>  </p>
</blockquote>



<p>I want to sum two different number .
think we have two different number that length of anyone is more than 20 number , how can I sum both ? as far as I know , I can not do this with int .</p>

<p>like these :</p>

<p>26565468416574156465651652464234245645945643526  + 6264635454513215421541412154121541544455412315</p>
