error: 'to_string' is not a member of 'std' ^

[column]

Hello,

Trying to convert string to int in QT:

#include <string>

std::string g = std::to_string(4);

Compiler shows error:

error: 'to_string' is not a member of 'std'

Why? How to fix it?

[VRonin]

this has nothing to do with Qt.
std::to_string is C++11, you have to make sure you have a recent enough compiler and to enable C++11 features. If you use Qt Creator you should add CONFIG += c++11 in your .pro file and re-run qmake

Alternatively you can #include <sstream> and use std::stringstream gstream; gstream << 4; std::string g=gstream.str();