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    <p>What your trying to achieve is parsing, not just raw splitting. Here is an example that will work for you using <a href="http://www.boost.org/doc/libs/1_55_0/libs/spirit/doc/html/index.html" rel="nofollow">boost::spirit</a>. I would strongly advice you using such tools because it allows you a bit of flexibility that raw litteral parsing with scanf won't provide you. This is not the only tool available, but it is worth the time you'll spent learning it.</p> <p>So here my small commented example, I hope it does help you:</p> <pre><code>#include &lt;boost/spirit/include/qi.hpp&gt; #include &lt;boost/spirit/include/phoenix_core.hpp&gt; #include &lt;boost/spirit/include/qi_as.hpp&gt; #include &lt;boost/variant.hpp&gt; #include &lt;iostream&gt; #include &lt;string&gt; #include &lt;vector&gt; #include &lt;iterator&gt; // Parameters can be either string or int typedef boost::variant&lt;std::string, double&gt; Parameter; // Here is the function where we read the command and retrieve entity/function // and parameters bool read_command(const std::string&amp; str) { // Just to ease the parser writing namespace qi = boost::spirit::qi; namespace ascii = boost::spirit::ascii; namespace phoenix = boost::phoenix; typedef qi::rule&lt;std::string::const_iterator, std::string()&gt; rule; // Variables where we will store the results std::string entity; std::string function; std::vector&lt;Parameter&gt; arguments; // An identifier rule identifier = qi::alpha &gt;&gt; *(qi::alnum | qi::char_("_")); // A parameter is either a number or an identifier, there is a issue if we // use "rule" type here, double are not read correctly anymore... auto parameter = qi::double_ | identifier; // The whole command bool r = qi::phrase_parse(str.begin(), str.end(), ( identifier &gt;&gt; identifier &gt;&gt; '(' &gt;&gt; (parameter % ',' ) &gt;&gt; ')' ), qi::space, entity, function, arguments); // Use qi "magic" to store result // Print everything std::cout &lt;&lt; "Parsing result:" &lt;&lt; std::endl &lt;&lt; " - Entity: " &lt;&lt; entity &lt;&lt; std::endl &lt;&lt; " - Function: " &lt;&lt; function &lt;&lt; std::endl &lt;&lt; " - " &lt;&lt; arguments.size() &lt;&lt; " parameter(s): "; // Use copy to print all the arguments std::copy(arguments.begin(), arguments.end(), std::ostream_iterator&lt;Parameter&gt;(std::cout, ", ")); std::cout &lt;&lt; std::endl; return r; } int main() { std::string str; // Read the line while (getline(std::cin, str)) { // Check that this is a line we do want to parse if (str.empty() || str[0] == 'q' || str[0] == 'Q') { break; } // Read the command and output the result if (read_command(str)) { std::cout &lt;&lt; "Parsing succeeded! " &lt;&lt; std::endl; } else { std::cout &lt;&lt; "Parsing failed." &lt;&lt; std::endl; } } return 0; } </code></pre> <p>Output example:</p> <pre><code>$ ./a.exe test f(1) Parsing result: - Entity: test - Function: f - 1 parameter(s): 1, Parsing succeeded! entity function(1, a, b) Parsing result: - Entity: entity - Function: function - 3 parameter(s): 1, a, b, Parsing succeeded! er1_ ft_(1, r_) Parsing result: - Entity: er1_ - Function: ft_ - 2 parameter(s): 1, r_, Parsing succeeded! </code></pre>
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    1. POImplementing an user interface based on text commands in C++
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    1. USJohan
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