关于VS2022不能使用<bits/stdc++.h>的解决方案(万能头文件)

•<bits/stdc++.h>介绍

　　#include<bits/stdc++.h>包含了目前 C++ 所包含的所有头文件，又称万能头文件，简直是开挂一般的存在。

　　你编程所需要的头文件基本上都囊括在了该万能头文件中，试想一下，将若干行头文件：

#include<iostream>
#include<cstdio>
#include<string>
#include<map>
#include<vector>
......

　　只用一行代码#include<bits/stdc++.h>来代替，是不是简单粗暴！

•如何在VS2022中使用万能头

　　可惜，这么好的万能头，在VS2022中不能使用，难道就此放弃吗？

　　不，作为21世纪有思想的时代青年，这点问题怎么能难道我呢？

　　首先，找到你本地VS的安装目录，在VS中找到 include 文件夹，我的在该路径上：

D:\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.31.31103\include

　　在 include 文件夹下创建一个bits 文件夹，并新建一个stdc++.h的文件，将如下代码复制到stdc++.h 文件中，即可在 VS2022 中使用万能头。

// C++ includes used for precompiling -*- C++ -*-
// Copyright (C) 2003-2016 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.
// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.
/** @file stdc++.h
 *  This is an implementation file for a precompiled header.
 */
// 17.4.1.2 Headers
// C
#ifndef _GLIBCXX_NO_ASSERT
#include <cassert>
#endif
#include <cctype>
#include <cerrno>
#include <cfloat>
#include <ciso646>
#include <climits>
#include <clocale>
#include <cmath>
#include <csetjmp>
#include <csignal>
#include <cstdarg>
#include <cstddef>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#if __cplusplus >= 201103L
#include <ccomplex>
#include <cfenv>
#include <cinttypes>
#include <cstdalign>
#include <cstdbool>
#include <cstdint>
#include <ctgmath>
#include <cuchar>
#include <cwchar>
#include <cwctype>
// C++
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <exception>
#include <fstream>
#include <functional>
#include <iomanip>
#include <ios>
#include <iosfwd>
#include <iostream>
#include <istream>
#include <iterator>
#include <limits>
#include <list>
#include <locale>
#include <map>
#include <memory>
#include <new>
#include <numeric>
#include <ostream>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <stdexcept>
#include <streambuf>
#include <string>
#include <typeinfo>
#include <utility>
#include <valarray>
#include <vector>
#include <array>
#include <atomic>
#include <chrono>
#include <codecvt>
#include <condition_variable>
#include <forward_list>
#include <future>
#include <initializer_list>
#include <mutex>
#include <random>
#include <ratio>
#include <regex>
#include <scoped_allocator>
#include <system_error>
#include <thread>
#include <tuple>
#include <typeindex>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#if __cplusplus >= 201402L
#include <shared_mutex>

　　设置完成后，重启 VS 即可愉悦的使用万能头了，完结撒花！

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