How Do I Enable C 17 Support in Visual Studio Code?

Enabling C 17 Support in Visual Studio Code C Extension

Problem:
In Visual Studio Code (VSCode), developers may encounter errors when using C 17 features like std::string_view. Despite successfully building the code, the editor throws error squiggles, suggesting a lack of C 17 support.

Solution:

To resolve this issue and enable C 17 support:

In VSCode:

1. Search for "cppstandard" in the extension settings.
2. In the dropdown menu, select the desired C version (e.g., C 17).

For the Debugger:

1. In the "tasks.json" file, ensure the following lines are present:

   • "-std=c 17": Specifies the C 17 standard.
   • "defines": ["_GLIBCXX_USE_CXX11_ABI=0"]: Prevents the debugger from using the outdated C 11 ABI.

{
  ...
  "tasks": [
    {
      ...
      "args": [
        "-std=c++17",
        "-I",
        "${fileDirname}",
        "-g",
        "${fileDirname}/*.cpp",
        "-o",
        "${workspaceFolder}/out/${fileBasenameNoExtension}.o"
      ],
      ...
      "defines": ["_GLIBCXX_USE_CXX11_ABI=0"]
      ...
    }
  ]
  ...
}

Note: Ensure that a folder named "out" exists in your workspace root.

By following these steps, you can effectively enable C 17 support in VSCode and ensure that both the editor and debugger use the correct C version, eliminating error squiggles and allowing for seamless development with C 17 features.

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