vscode C++ 自动补全失效

设置搜索这几个，并设置为对应值。

如果没解决，可能是clangd的问题。

禁用clangd，然后去看看c_cpp_properties.json。

看complierPath是不是clang。 如果是，改成g++/gcc。

再看一下intelliSenseMode是不是clang。如果是，改为default。

linux下c_cpp_properties.json的配置

1.   {
2.   "configurations": [
3.   {
4.   "name": "Linux",
5.   "includePath": [
6.   "/usr/include",
7.   "/usr/local/include",
8.   "${workspaceFolder}/**"
9.   ],
10.   "defines": [],
11.   "compilerPath": "/usr/bin/g++",
12.   "cStandard": "c23",
13.   "cppStandard": "c++20",
14.   "browse":{"path":[
15.   "/usr/include",
16.   "/usr/local/include",
17.   "${workspaceFolder}/**"
18.   ]
19.   },
20.   "intelliSenseMode": "${default}"
21.   }
22.   ],
23.   "version": 4
24.   }

windows下c_cpp_properties.json的配置

1.   {
2.   "configurations": [
3.   {
4.   "name": "Win32",
5.   "includePath": [
6.   "D:/programme/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/12.2.0/include/c++",
7.   "D:/programme/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/12.2.0/include/c++/x86_64-w64-mingw32",
8.   "D:/programme/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/12.2.0/include/c++/backward",
9.   "D:/programme/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/12.2.0/include",
10.   "D:/programme/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/12.2.0/include-fixed",
11.   "D:/programme/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/12.2.0/../../../../x86_64-w64-mingw32/include"
12.   ],
13.   "defines": [
14.   "_DEBUG",
15.   "UNICODE",
16.   "_UNICODE"
17.   ],
18.   "compilerPath": "D:\\programme\\mingw64\\bin\\g++.exe",
19.   "cStandard": "c23",
20.   "cppStandard": "c++23",
21.   "intelliSenseMode": "windows-gcc-x64"
22.   },
23.   "version": 4
24.   }

如果嫌vscode自带的补全太慢，可以更改以下设置（默认为10，建议改到5以下）

参考文章：

VSCode C/C++无法跳转到定义、自动补全、悬停提示功能

VSCode代码自动补全太慢的问题

vscode解决自动补全突然失效的问题(c++)