hi, i'm working over a code to interchange messages using sockets, i have a server that when client connect to, server sends a char number(eg "100"), when client receives this string number, it has to addition +5 , to do that i need to change format from string to int and make sum operation, but when i do de change of format i get some error this message on the console window :

bad lexical cast : source type value could not be interpreted as target

Part of the code is :

boost::array<char, 2> buf;
      boost::system::error_code error;

      size_t len = socket.read_some(boost::asio::buffer(buf), error);

      if (error == boost::asio::error::eof)
       break; // Connection closed cleanly by peer.

std::string datos=buf.data();
int rxint;
vector[2]=buf.data();
rxint=boost::lexical_cast<int>(datos); //(here is the problem)

      std::cout.write(buf.data(), len);

do i making something wrong?
--
Ing Pedro Alonso Chaparro Valero
Ciudad Politecnica de la Innovación
iTEAM - Mobile Communications Group
Polytechnic University of Valencia
C\ Camino de Vera S/N, Edificio 8G
46022 Valencia, Spain