C++ 如何解决未解决的包含：<iostream> 在 eclipse 中？
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How to solve Unresolved inclusion: <iostream> in eclipse?
提问by Alaa M.
I built a simple program in eclipse:
我在eclipse中构建了一个简单的程序：
#include <iostream>
using namespace std;
int main()
{
cout << "TEST" << endl;
return 0;
}
It worked in Visual Studio and CodeBlocks, but eclipse is acting weird. it says:
它在 Visual Studio 和 CodeBlocks 中工作，但 eclipse 表现得很奇怪。它说：
Unresolved inclusion: <iostream>
Unresolved inclusion: <iostream>
I read here: C++ - Unresolved inclusion: <iostream>
我在这里阅读： C++ - 未解决的包含：<iostream>
and here: Unresolved <iostream> in Eclipse, Ubuntu
在这里：未解决的 <iostream> 在 Eclipse、Ubuntu
and neither of them worked.
他们都没有工作。
Here are screenshots of project properties:
以下是截图project properties：
edit:
编辑：
I downloaded MinGWand now i have this under Settings:
我下载了MinGW，现在我有这个Settings：
How should i proceed?
Maybe now i don't need #include <iostream>because it's now included in the project?
我应该如何进行？也许现在我不需要，#include <iostream>因为它现在包含在项目中？
I found iostreamunder Includes.
我iostream在Includes.
So i tried deleting #include <iostream>, but when i try to run the program i get:
Launch Failed. Binary not found.error:
所以我尝试删除#include <iostream>，但是当我尝试运行该程序时，我得到：
Launch Failed. Binary not found.错误：
Thanks
谢谢
edit:
编辑：
Seems like if i compile in some other program (say CodeBlocks) and create the exefile, then eclipsecan run it. But it can't build its own exe.
好像如果我在其他程序（比如 CodeBlocks）中编译并创建exe文件，然后eclipse可以运行它。但它不能建立自己的exe.
Why?
为什么？
回答by Bruce Chidester
This answer did not help me either. My issue was solved with the following steps:
这个答案也没有帮助我。我的问题是通过以下步骤解决的：
You might try changing your source files from *.c to *.cpp. This will provoke gcc to think of the files as C++ and search the proper paths. Might need to make small modifications to the Makefile as well, like on the OBJ: line. Instead of:
您可以尝试将源文件从 *.c 更改为 *.cpp。这将促使 gcc 将文件视为 C++ 并搜索正确的路径。可能还需要对 Makefile 进行小的修改，例如在 OBJ: 行上。代替：
OBJS = YourFile.o
OBJS = YourFile.o
try
尝试
OBJS = YourFile.cpp
OBJS = YourFile.cpp
回答by Peng Zup
I've searched for a few hours and tried a lot solutions.
我已经搜索了几个小时并尝试了很多解决方案。
Envirment: windows, Eclipse IDE for C/C++ Developers
环境：windows，面向 C/C++ 开发人员的 Eclipse IDE
Version: Kepler Service Release 2
版本：开普勒服务第 2 版
CDT: 8.3.0
CDT：8.3.0
Following steps works for me:
以下步骤对我有用：
make sure the envirement is clear. => I suggest delete the eclipse and unzip it again from your orginal download.
make sure the workspace is clear. => Delete .metadata folder in your workspace folder.
use valid MinGW. => the one using download tool is slow and I'm not sure which one to select. I suggest download MinGWStudiofrom http://vaultec.mbnet.fi/mingwstudio.phpThis is a IDE tool like eclipse contains a downloaded unzip MinGW. Make sure you download the one plus MinGW compiler which is about 20M. You can use this studio if you want or copy the MinGW folder to C:/if you still prefer eclipse. Copy /MinGW inside /MinGWStudio to C:/.
close your eclipse and reopen it, create a new project, you should able to see MinGW section for new project option, and it will auto map g++, gcc and include files under C:/MinGW folder. Just make sure you copy MinGW folder from MinGWStudio to the root of C:/.
确保环境清晰。=>我建议删除 eclipse 并从您的原始下载中再次解压缩。
确保工作区清晰。=>删除工作区文件夹中的 .metadata 文件夹。
使用有效的 MinGW。=> 使用下载工具的速度很慢，我不确定选择哪个。我建议从http://vaultec.mbnet.fi/mingwstudio.php下载 MinGWStudio这是一个像 eclipse 这样的 IDE 工具，包含一个下载的解压 MinGW。一定要下载一加MinGW编译器，大概20M左右。如果您愿意，可以使用此工作室，或者如果您仍然喜欢 eclipse，则将MinGW 文件夹复制到C:/。将 /MinGWStudio 内的 /MinGW 复制到 C:/。
关闭你的 eclipse 并重新打开它，创建一个新项目，你应该能够看到新项目选项的 MinGW 部分，它会自动映射 C:/MinGW 文件夹下的 g++、gcc 和包含文件。只需确保将 MinGW 文件夹从 MinGWStudio 复制到 C:/ 的根目录。
You will able to see your include after these steps.
在这些步骤之后，您将能够看到您的包含。
回答by BlueTechM
right click your project click properties goto C/C++ Build > settings click on Misc. under GCC C++ Compiler and the other flags code should have this after it -std=c++11 then go to Misc. under GCC C Compiler and add this to the other flags code -std=gnu11 apply save your project build your project and it should work
右键单击您的项目单击属性转到 C/C++ 构建 > 设置单击 Misc。在 GCC C++ Compiler 下，其他标志代码应该在 -std=c++11 之后有这个，然后转到 Misc。在 GCC C 编译器下并将其添加到其他标志代码 -std=gnu11 apply 保存您的项目构建您的项目，它应该可以工作
