HI how would I use program options to accept multiple input. <br><br>Example I have a diffieHellmanKeyExchange program running through command prompt. <br><br>// begin main program<br>#include &lt;iostream&gt;<br>#include &lt;boost/tuple/tuple_io.hpp&gt;
<br>#include &lt;boost/program_options.hpp&gt;<br>#include &quot;cppdef/BitOperation.cpp&quot;<br>#include &quot;cppdef/mathfunc.cpp&quot;<br>#include &quot;cppdef/IsPrime.cpp&quot;<br>#include &quot;cppdef/DiffieHellman.cpp&quot;
<br>#include &lt;BigInteger.hpp&gt;<br>#include &lt;BigIntegerUtils.hpp&gt;<br><br>int main( int ac, char* av[] )<br>{<br>&nbsp;&nbsp;&nbsp; namespace po = boost::program_options;<br>&nbsp;&nbsp;&nbsp; po::options_description desc(&quot;Allowed options&quot;);
<br>&nbsp;&nbsp;&nbsp; boost::tuple&lt;BigInteger, BigInteger&gt; key_pair;<br>&nbsp;&nbsp;&nbsp; desc.add_options()<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; (&quot;generate&quot;, &quot;generates a pair of key&quot;)<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; (&quot;secert&quot;, po::value(&amp;key_pair), &quot;creates the share secret key&quot;);
<br><br>&nbsp;&nbsp;&nbsp; po::variables_map vm;<br>&nbsp;&nbsp;&nbsp; po::store(po::parse_command_line(ac, av, desc), vm);<br>&nbsp;&nbsp;&nbsp; po::notify(vm);<br><br>&nbsp;&nbsp;&nbsp; if (vm.count(&quot;generate&quot;))<br>&nbsp;&nbsp;&nbsp; {<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; BigInteger my_prime = encryptcpw::random_prime&lt;BigInteger&gt;(&amp;algocpw::Miller_Rabin&lt;BigInteger&gt;, 10);
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; std::cout &lt;&lt; &quot;my prime: &quot; &lt;&lt; my_prime &lt;&lt; &quot;\n&quot;;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; boost::tuple&lt;BigInteger, BigInteger&gt; pare(encryptcpw::dh_init&lt;BigInteger&gt;(<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;my_prime<br>
&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; ));<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; std::cout &lt;&lt; &quot;pair of generated number: &quot; &lt;&lt; pare &lt;&lt; &quot;\n&quot;;<br>&nbsp;&nbsp;&nbsp; }<br>&nbsp;&nbsp;&nbsp; if (vm.count(&quot;secert&quot;))<br>&nbsp;&nbsp;&nbsp; {<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; const BigInteger p( encryptcpw::random_prime&lt;BigInteger&gt;(&amp;algocpw::Miller_Rabin&lt;BigInteger&gt;, 10));
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; std::cout &lt;&lt; encryptcpw::dh_secret&lt;BigInteger&gt;(<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; p,<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; boost::tuples::get&lt;0&gt;(key_pair),<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;boost::tuples::get&lt;1&gt;(key_pair));
<br>&nbsp;&nbsp;&nbsp; }<br>}<br><br><br>// end program<br><br>The thing compiles but when I do DiffieHellman.exe --secert 817 697 <br><br>I get this error. <br>C:\CPW\cs_classes&gt;DiffieHellmanEncrypt --secert 817 697<br>terminate called after throwing an instance of &#39;boost::program_options::invalid_
<br>option_value&#39;<br>&nbsp; what():&nbsp; in option &#39;secert&#39;: invalid option value &#39;817&#39;<br><br>This application has requested the Runtime to terminate it in an unusual way.<br>Please contact the application&#39;s support team for more information.
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