手动添加bits/stdc++.h到vs2017（万能头文件）

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原文链接：https://blog.youkuaiyun.com/maitianpt/article/details/82155083

本文详细介绍了如何在Visual Studio 2017中配置使用bits/stdc++.h头文件，通过手动添加stdc++.h源码到VS的头文件库，实现快速调用大量C++标准库功能。

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本文链接：https://blog.youkuaiyun.com/maitianpt/article/details/82155083

本机环境：win10 64位 vs2017

最近码代码时偶然发现了bits/stdc++.h这个头文件（万能头文件），基本上所有的代码只要用了这个头文件就不再写其他头文件了。

看到它就仿佛开启了新世界（也有缺点，就是导致编译速度变慢，不过一般可以忽略不计）。

但是当我想用它时却发现：

看来要手动添加喽【如果安装了MinGW的直接在文件夹里面找到bits这个文件夹，把里面内容复制粘贴到vs的头文件库里面】

如果没有安装MinGW，那就跟着我来做以下步骤：

1.新建txt文档，把以下代码（stdc++.h源码）复制进去：

// C++ includes used for precompiling -*- C++ -*-
 
// Copyright (C) 2003-2015 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 <cwchar>
#include <cwctype>
#endif
 
// 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>
 
#if __cplusplus >= 201103L
#include <array>
#include <atomic>
#include <chrono>
#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>
#endif

2.把txt文档改名stdc++.h

3.打开vs2017的安装目录，右上角搜索MSCV，打开这个文件夹:

然后依次打开文件夹“14.15.26726”》》“include”

在“include”目录下新建文件夹“bits”，然后把刚才的bits/stdc++.h移入。

4. 大功告成

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