问编译时vscode找不到头，而Intellisense可以找到头。

EN

{
    "configurations": [
        {
            "name": "Win32",
            "includePath": [
                "${workspaceFolder}/**",
                "C:/Users/zz_ro/Documents/source/boost_1_70_0"
            ],
            "defines": [
                "_DEBUG",
                "UNICODE",
                "_UNICODE"
            ],
            "windowsSdkVersion": "10.0.17763.0",
            "compilerPath": "C:/mingw/bin/g++.exe",
            "cStandard": "c11",
            "cppStandard": "c++11",
            "intelliSenseMode": "gcc-x64"
        }
    ],
    "version": 4
}

#include "boost/math/constants/constants.hpp"
#include "boost/multiprecision/cpp_dec_float.hpp"
#include <iostream>
#include <limits>
int main()
{
    using boost::multiprecision::cpp_dec_float_50;
    cpp_dec_float_50 seventh = cpp_dec_float_50(1) / 7;
    std::cout.precision(std::numeric_limits<cpp_dec_float_50>::digits10);
    std::cout << seventh << std::endl;
}

helloworld.cpp:1:46: fatal error: boost/math/constants/constants.hpp: No such file or directory
 #include "boost/math/constants/constants.hpp"
                                              ^
compilation terminated.
The terminal process terminated with exit code: 1

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "build hello world",
            "type": "shell",
            "command": "g++",
            "args": [
                "-g",
                "helloworld.cpp",
                "-o",                               
                "helloworld"                
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            }
        }
    ]
}

{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "tasks": [
        {
            "label": "build hello world",
            "type": "shell",
            "command": "g++",
            "args": [
                "-g",
                "-IC:\\Users\\zz_ro\\Documents\\source\\boost_1_70_0", 
                "helloworld.cpp",
                "-o",                               
                "helloworld"                
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            }
        }
    ]
}