求助，ubuntu下vscode中c语言提示不全，已成功编译并运行

c_cpp_properties.json里是这么写的，哪里可能有问题？
{"configurations": [{"name": "Linux","includePath": ["/usr/include","/usr/local/include","${workspaceFolder}/**"],"defines": [],"cStandard": "c17","cppStandard": "gnu++17","intelliSenseMode": "linux-gcc-x64"}],"version": 4}

更新一下，问题解决了，似乎和我乱七八糟的配置（.vscod文件夹）有关，完全抛弃原有的文件夹重新开一个工作区就好了（实际玄奥）。