vscode编译通过，头文件爆红

1. 在VSCode中按 Ctrl + Shift + P，输入 C/C++: Edit Configuration(JSON)
   

打开 c_cpp_properties.,json文件，在这里配置头文件

2. 打开命令行，输入 gcc -v -E -x c++ -
   

复制后面给出的路径到 c_cpp_properties.,json 中：

{
    "configurations": [
        {
            "name": "linux",
            "includePath": [
                "${workspaceFolder}/**",
                "${workspaceFolder}/include/**",
                "${workspaceFolder}/../external/include/**",
                "/usr/include/c++/10/**",
                "/usr/include/x86_64-linux-gnu/c++/10/**",
                "/usr/include/c++/10/backward/**",
                "/usr/lib/gcc/x86_64-linux-gnu/10/include/**",
                "/usr/local/include/**",
                "/usr/include/x86_64-linux-gnu/**",
                "/usr/include/**"
            ],
            "defines": [],
            "compilerPath":"/usr/bin/g++",
            "cStandard": "c11",
            "cppStandard": "c++14",
            "intelliSenseMode":"linux-clang-x64"
        }
    ],
    "version": 4
}

[!Warning]
记得最后是以 /** 结尾

同时添加外部添加的库的头文件目录到 includePath 里面，就大功告成！！