I know that we can compile program as C++ using g++ compiler. But g++ compiler defaults to 98 version. To run it as C++ 14, we need to add -std=c++14 in termina
The best way to edit default files is to use PackageResourceViewer.
Once installed, run the PackageResourceViewer: Open Resource command from the command palette. You will be shown a list of packages which you can navigate into to select the file you wish to edit.
The selected file will be opened in a new document, and any changes will be saved to a new file located at Packages/PackageThatYouEdited/FileThatYouEdited.ext
The benefit of this method is that the edited file in Packages will now override the original file that resides within the sublime-package file, but the original file will remain intact. Should you choose to delete the edited file, the original file in the sublime-package will once again be active.