[Boost-users] Question about Boost string tokenizer

Hi, I have the following loop to tokenize a string. But how can I pass the sub-string to ato()? for(boost::tokenizer<>::iterator beg=tok.begin(); beg!=tok.end();++beg){ int value = atoi(*beg); cout << value << "\n"; i++; } I get this error, in my code: : error: cannot convert 'const std::basic_string' to 'const char*' for argument '1' to 'int atoi(const char*)'