c++ - Problems with std::stoi, not working on MinGW GCC 4.7.2 -

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#include <iostream> #include <string>  int main() {     std::string test = "45";     int myint = stoi(test);     std::cout << myint << '\n'; }

i tried code on computer running mingw gcc 4.7.2. gives me error:

enter image description here

what doing wrong, got cppreference. exact same code. , different error 1 described here.

it seems mingw needs patch: enabling string conversion functions in mingw

this patch enables following list of c++11 functions , templates in std namespace:

stoi, stol, stoul, stoll, stof, stod, stold, to_string, to_wstring

in above link, there .zip file, download and

  • copy wchar.h , stdio.h include directory in zip file following directory (overwrite): c:\mingw\include (replace c:\mingw\ appropriate directory)
  • copy os_defines.h following directory (overwrite): c:\mingw\lib\gcc\mingw32\4.7.0\include\c++\mingw32\bits (replace c:\mingw\ appropriate directory) (replace 4.7.0 correct version number)

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