如何在 C++ 中找到从 ofstream 创建的文件的目录路径？
我想获取使用 ofstream 创建的文件的目录。 我编写的代码类似于
std::ofstream txt("sample.txt", std::ios::binary);
然后我将一些内容写入txt文件，然后调用txt.close()来关闭ofstream。在编写时，我想获取sample.txt文件的位置并将其写入sample.txt。 例如，目录路径如下所示：
/home/usr/Downloads/sample.txt
我想将整个内容保存为字符串，以便可以将其写入sample.txt 文件中。有人可以帮忙吗？ 我正在使用 Linux 来编码，并且有一种通用的方法来做到这一点会很好（在 Windows、Linux、Mac 等上工作）。
I want to get the directory of a file which I created using ofstream.
Code I wrote is something like
std::ofstream txt("sample.txt", std::ios::binary);
Then I write some things to the txt file, then call txt.close() to close the ofstream. While writing, I want to get the location of the sample.txt file and write it on to sample.txt.
For example, the directory path would be like this:
/home/usr/Downloads/sample.txt
I want to save that whole thing as string so I can write it into sample.txt file. Can anyone help?
I am using linux to code this, and a universal way to do this would be nice(working on windows, linux, mac etc).
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您应该查看 Boost.Filesystem 进行便携式路径处理。 C++ 没有太多的路径，因为您可能在没有文件系统的平台上运行。但是，您可以尝试使用 getcwd 并附加 '/' 来获取某些内容输出和文件名之间。 getcwd 不是 C 的一部分，但它在 Windows 上可用 _getcwd - - POSIX 兼容系统将具有规范的
getcwd。这应该可以工作（但我很确定在某些特殊情况下它不会工作，例如，如果从 UNC 路径等运行）。You should look into Boost.Filesystem for portable path handling. C++ does't have too much for paths, as you might be running on platforms without a file system. However, you could try to get something with getcwd and appending '/' between the output and your file name. getcwd is not part of C, but it's available on Windows as _getcwd -- POSIX compliant systems will have the canonical
getcwd. This should work (but I'm pretty sure there are corner cases where it won't, for instance, if running from UNC paths or so.)好吧，在窗户上，我可以帮你。获取工作目录
http://msdn.microsoft.com/ en-us/library/sf98bd4y%28v=vs.80%29.aspx
听起来像是您要找的。
哦哦哦看这里
获取当前目录？
Well on windows, I can give you a hand. Get Working Directory
http://msdn.microsoft.com/en-us/library/sf98bd4y%28v=vs.80%29.aspx
sounds like what you're looking for.
OH OH OH look here
What is a cross-platform way to get the current directory?