最近发现 MacOS Catalina 的 Visual Studio Code 不能调试 C++ 了，翻遍了国内各种资料各种方法无效，不得已准备去啃官方网站的说明，发现这个

https://code.visualstudio.com/docs/cpp/launch-json-reference#_externalconsole
https://code.visualstudio.com/docs/cpp/launch-json-reference#_externalconsole
，原来 xcode 更新之后已经不提供 lldb-mi 了，所以 externalConsole 那个配置项即便为 True 也是无效的，仅仅能打开个 Terminal 但是无法执行程序，解决方法如下：安装 CodeLLDB 插件，然后使用其提供的 launch 配置文件即可。

附：tasks.json 和 launch.json

tasks.json

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{
    "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
            }
        }
    ]
}

launch.json , 注意其中的 type 参数

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{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
      {
        "name": "clang++ - Build and debug active file",
        "type": "lldb",
        "request": "launch",
        "program": "${fileDirname}/${fileBasenameNoExtension}",
        "args": ["-arg1", "-arg2"],
        "cwd": "${workspaceFolder}",
        "preLaunchTask": "clang++ build active file"
      }
    ]
  }