VS code c++ for macOS: compilation works but VS code detects errors

Question

I followed the tutorial on this webpage: https://code.visualstudio.com/docs/cpp/config-clang-mac to be able to compile c++ programs using VS Code. After doing all things requested, I am able to compile and to debug the c++ file.

However, it seems that there is an issue. In the box "PROBLEMS", I have the two following errors:

expected ';' at end of declaration [9, 23]

range-based for loop is a C++11 extension [-Wc++11-extensions] [11, 29]

My code is exactly the same as the one reported in the VS code website. I also checked all *.json files and c++17 is the default compiler.

The tasks.json is as follows:

{
// See https://go.microsoft.com/fwlink/?LinkId=733558
// for the documentation about the tasks.json format
"version": "2.0.0",
"tasks": [
  {
    "type": "shell",
    "label": "clang++ build active file",
    "command": "/usr/bin/clang++",
    "args": [
      "-std=c++17",
      "-stdlib=libc++",
      "-g",
      "${file}",
      "-o",
      "${fileDirname}/${fileBasenameNoExtension}"
    ],
    "options": {
      "cwd": "${workspaceFolder}"
    },
    "problemMatcher": ["$gcc"],
    "group": {
      "kind": "build",
      "isDefault": true
    }
  }
]

}

The c_cpp_properties.json is as follows:

{
"configurations": [
    {
        "name": "Mac",
        "includePath": [
            "${workspaceFolder}/**"
        ],
        "defines": [],
        "macFrameworkPath": [
            "/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks"
        ],
        "compilerPath": "/usr/bin/clang",
        "cStandard": "c11",
        "cppStandard": "c++17",
        "intelliSenseMode": "clang-x64"
    }
],
"version": 4

}

When compiling, everything is fine:

> Executing task: /usr/bin/clang++ -std=c++17 -stdlib=libc++ -g /Users/stephane/Documents/c++/causality/run_mainfile.cpp -o /Users/stephane/Documents/c++/causality/run_mainfile <
Terminal will be reused by tasks, press any key to close it.

Here is the screenshot:

I am using macOS 10.15.6, VS Code 1.47.1, and C/C++ extension v0.29.

Any ideas?

Answer 1

@RangerBob The solution is simply what @brc-dd said but you don't have to create a new project/directory. Go to Preferences > Search > "c++ standard". Choose C++17, and VS Code will create a new file "settings.json" with that standard causing the 3 warnings to disappear.