to_string is not a member of std, says g++ (mingw)

Question

I am making a small vocabulary remembering program where words would would be flashed at me randomly for meanings. I want to use standard C++ library as Bjarne Stroustroup t

Answer 1

The fact is that libstdc++ actually supported std::to_string in *-w64-mingw32 targets since 4.8.0. However, this does not include support for MinGW.org, Cygwin and variants (e.g. *-pc-msys from MSYS2). See also https://cygwin.com/ml/cygwin/2015-01/msg00245.html.

I have implemented a workaround before the bug resolved for MinGW-w64. Being different to code in other answers, this is a mimic to libstdc++ (as possible). It does not require string stream construction but depends on libstdc++ extensions. Even now I am using mingw-w64 targets on Windows, it still works well for multiple other targets (as long as long double functions not being used).