This extension allows to easily add arguments for a program being debugged by Microsoft C/C++ Extension.
This extension requires Microsoft C/C++ for VS Code extension to be installed as that extensions provides the core of the debuggging functionalities. This extension then edits the setting files so that the program being debugged starts with the given arguments or flags.
Use this extension by typing Debug with flags: C/C++ files
in the command palette Ctrl-Shift-P