blocks|key|3597072|text|下面的代码在我看来很好用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3597073|#include+<fstream>
using+namespace+std;

int+main(){
++++ofstream+fout("afile.txt");
++++fout+<<+"write+someting"<<endl;
++++fout.close();
++++return+0;
}|code-block|syntax|javascript|3597074|您没有使用main方法(奇怪的是它没有给出任何语法错误)。当您创建这样的项目时，请确保它是一个ConsoleApplication并且是一个空项目(您可以在Win32应用程序向导(用于创建项目的向导)的"Additional+Options“下选中此选项)。|3597075|标准C%2B%2B应该可以在Visual+Studio中工作。如果您希望确保只使用标准C%2B%2B代码，则可以始终使用/Za编译器选项(请参见http://msdn.microsoft.com/en-us/library/0k0w269d.aspx)|offset|length|3597076|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/0k0w269d.aspx^0|0|0|0|1S|1H|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

Following code works fine by me:

<pre><code>#include &lt;fstream&gt;
using namespace std;

int main(){
 ofstream fout("afile.txt");
 fout &lt;&lt; "write someting"&lt;&lt;endl;
 fout.close();
 return 0;
}
</code></pre>

You didn't use the main method (strange that it didn't give any syntax errors).
Make sure when you creat a project like this it is a ConsoleApplication and it's an empty project (you can check this option under "Additional Options" in the Win32 Application Wizard (The wizard used to create a project).

Standard C++ should work in Visual Studio. If you want to be sure you're using only standard C++ code, you can always use the /Za compiler option (See <a href="http://msdn.microsoft.com/en-us/library/0k0w269d.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/0k0w269d.aspx</a>)

blocks|key|3597138|text|我怀疑这个文件是在您预期之外的地方创建的-检查工作目录所指向的位置。这是2012年，但即使不是相同的，也是非常相似的…右键单击vs2010中的项目，选择属性，然后选择调试并查看工作目录：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3597139|​|3597140|📷|atomic|offset|length|3597141|3597142|或者，构建它，并将应用程序复制到您创建的目录中-然后在命令行上运行它，以检查是否存在权限问题。|3597143|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/f38d02385efd1a7446e9d5d3fe52ead1.png|imageAlt^0|0|0|0|1|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@$G|X|H|Y|1|Z]]|A|$]]|$1|I|3|C|5|6|7|10|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|11|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S|T|-4]]]]

My suspicion is that the file is created somewhere other than you expected - Check out where the working directory is pointing. This is 2012, but it is very similar if not the same... Right click on the project in vs2010, and select properties, Then select debugging and look at the working directory:

<img src="https://i.stack.imgur.com/pqbBo.png" alt="enter image description here">

Alternitively, build it, and copy the app to a directory you create - Then run it on the command line to check whether its a permissions problem.

blocks|key|3597173|text|我也有同样的问题，困扰了我几分钟。检查您的项目目录。我打赌你会在里面找到你的文件。如果不是，则需要为调试或发布模式指定一个工作目录。在MS+Visual+Studio中，您可以这样做:单击“项目”菜单上的“属性”，然后在“配置”属性中指定“工作目录”字段中的“调试”选项卡，您希望从中启动项目的目录。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3597174|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I had the same problem which puzzled me for a few minutes. Examine your project directory. I bet you will find your file in there. If not, then you need to specify a working directory for either debug or release modes. In MS Visual Studio you can do so by clicking the Properties on the Project menu and then specifying in the Configuration properties in lets say a Debugging tab in the Working directory field the directory from which you want your project to be launched.

blocks|key|3597223|text|手动将afile.txt添加到与源文件相同的位置，然后运行程序。文本将写入到文件中。但请确保在运行该程序时afile.txt文件未打开|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3597224|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

manually add afile.txt into the same location with your source file, and then run the your program. text will be written into the file. But make sure afile.txt file is not open when you run the program

I have a C++ project which I initially compiled with g++. Now, I am trying to make it work in Visual Studio 2010 and the problem is that the regular commands that create an empty output file for writing:

<pre><code>#include &lt;fstream&gt;
using namespace std;

ofstream fout("afile.txt");
fout&lt;&lt;"write someting"&lt;&lt;endl;
fout.close();
</code></pre>

will not work in VS2010 (no file is created). Even if the file already exists nothing is written on it.

So, any ideas what is the correct way of opening a file for writing from C++ in VS2010 ?

Creating output file in C++ Visual Studio 2010

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个最初用g++编译的C++项目。现在，我正在尝试让它在Visual Studio2010中工作，问题是创建空输出文件的常规命令：#include <fstream>using namespace std;ofstream fout("afile.txt");fout<<"write someting"<<endl...

问在C++ Visual Studio2010中创建输出文件
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