在vscode中按Ctrl+Shift+P 输入configuration ，编辑c_cpp_properties.json，在其includePath字段中添加待添加的SDK或者库的头文件路径

{
    "configurations": [
        {
            "browse": {
                "databaseFilename": "",
                "limitSymbolsToIncludedHeaders": true
            },
            "includePath": [              
                "/opt/ros/kinetic/include/**",
                "/usr/include/**",
                "/usr/local/lib"
               
              
            ],
            "name": "ROS",
            "intelliSenseMode": "gcc-x64",
            "compilerPath": "/usr/bin/gcc",
            "cStandard": "c11",
            "cppStandard": "c++17"
        }
    ],
    "version": 4
}