(C++) AskUserForDouble

 

AskUserForDouble is a std::string code snippet to ask the user for a single-line input (which is then converted to double).

 

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#include <iostream> #include <string> #include <boost/lexical_cast.hpp> //From http://www.richelbilderbeek.nl/CppAskUserForDouble.htm const double AskUserForDouble() {   while (1)   {     const std::string s = AskUserForString();     if (!IsDouble(s)) continue;     return boost::lexical_cast<double>(s);   } }