工欲善其事，必先利其器
众所周知，ACM里有一个强大的神器便是“bits/stdc++.h”，然而在Xcode中include这个头文件却报错，原因是stdc++.h是gcc特有的，而Xcode的c++编译器是clang，所以不能用万能头
解决方法就是手写一个stdc++.h用
方法1:手动设置-
打开访达
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按“⇧⌘Ｇ”来调出“前往文件夹”，或者点左上角倒数第三个按钮“前往”，选择“前往文件夹”
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输入Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1
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你就会进入一个如下的文件夹
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你需要建一个名为bits的文件夹
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进入bits的文件夹后，建立一个TXT格式的文稿，并改名为stdc++.h
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将如下的代码粘贴进stdc++.h内
// C++ includes used for precompiling -*- C++ -*- // Copyright (C) 2003-2013 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 //
#endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if __cplusplus >= 201103L #include #include #include //#include #include #include #include #include #include #endif // C++ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include -
#include
#include -
保存就可以了
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打开终端
cd /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1 sudo mkdir bits sudo touch stdc++.h sudo vim stdc++.h
// C++ includes used for precompiling -*- C++ -*- // Copyright (C) 2003-2013 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 //
#endif #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if __cplusplus >= 201103L #include #include #include //#include #include #include #include #include #include #endif // C++ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include -
#include
#include
如果上面的两个方法都不行，那就介绍一个有手就行的方法，
打开：这个网站
下载到本地
打开命令行，进入存放该文件的路径下，输sudo sh Xcode-bits-stdc++.sh，键入管理员密码后即可自动运行脚本，完成配置，真点击就送
