Technically, those are free functions defined on strings, not members functions of the class string. But also: std::to_string http://en.cppreference.com/w/cpp

Technically, those are free functions defined on strings, not members functions of the class string. But also: std::to_string http://en.cppreference.com/w/cpp/string/basic_string/to_string http://en.cppreference.com/w/cpp/string/basic_string/to_stri...