c++ - Better way to determine which shell is being used at runtime (Windows)? -

i have function clears terminal screen. it's supposed work on windows , *nix based os. if function detects caller's os windows, check see if caller using cmd.exe or else (git-bash or cygwin).

is there better way this? don't fact need rely on home variable.

compiler: g++

#include <cstdlib>  void clearscreen() {   #ifdef _win32     if (std::getenv("home"))   // git-bash & cygwin home var called home         std::system("clear");  // cmd's home var called homepath     else         std::system("cls");   #else     // assume posix     std::system("clear");   #endif } 

note: function has been tested in cmd.exe, git-bash, , wsl. has not been tested in cygwin.