Problems with std::stoi, not working on MinGW GCC 4.7.2
c++, mingw
Solution
It seems your MinGW needs a patch: Enabling string conversion functions in MinGW
This patch enables the following list of C++11 functions and templates in the std namespace:
stoi, stol, stoul, stoll, stof, stod, stold, to_string, to_wstring
In above link, there is a `.zip` file, download it and
- Copy wchar.h and stdio.h from the include directory in the zip file to the following directory (overwrite): C:\mingw\include (replace C:\mingw\ with the appropriate directory)
- Copy os_defines.h to the following directory (overwrite): C:\mingw\lib\gcc\mingw32\4.7.0\include\c++\mingw32\bits (replace C:\mingw\ with the appropriate directory) (replace 4.7.0 with the correct version number)
Problem
``` #include <iostream> #include <string> int main() { std::string test = "45"; int myint = stoi(test); std::cout << myint << '\n'; } ``` I tried this code on my computer which is running MinGW GCC 4.7.2. It gives me this error: What am I doing wrong, I got this from cppreference. Its the exact same code. And its a different error from the one described here.