Microsoft has an official page for the extension, which you can view at https://code.visualstudio.com/docs/languages/cpp. This page describes, among other things, how to configure through the use of JSON files. Let's start by creating a new configuration file to manage our C/C++ environment. You can generate a new configuration file by pressing the F1 key, typing C/C, and selecting C/Cpp: Edit Configurations…:

This will generate a new c_cpp_properties.json in a .vscode folder within your current project. The file will contain configuration options for your C/C++ compiler based on your platform, the C and C++ standards to use, and the include paths for header files. You can close this file once it's generated. We will revisit it when we configure the EMSDK.