Listing 1: How to use lexical_cast
#include <iostream> #include <string> #include <boost/lexical_cast.hpp> int main() { std::string s="3.14159265358979"; try { std::cout << "Lexical conversion from string to double\n"; double d=boost::lexical_cast<double>(s); std::cout << double d: << d << '\n\n'; } catch(boost::bad_lexical_cast& e) { std::cout << "Conversion failed: " << e.what() << '\n'; } try { std::cout << "Lexical conversion from literal string to int\n"; int i=boost::lexical_cast<int>("123 4"); std::cout << "int i: " << i << '\n'; } catch(boost::bad_lexical_cast& e) { std::cout << "Conversion failed: " << e.what() << '\n'; } } End of Listing