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在Unix上写函数需要unistd.h，windows怎么样？

[英]write function requires unistd.h on Unix, what about windows?

原文 2011-04-16 05:27:58 5 2 c/ windows/ visual-studio/ posix/ unistd.h

I've changed from a linux computer to a windows and I'm having trouble compiling my code because these two OS don't share the same header files. 我已经从Linux计算机更改为Windows并且我在编译代码时遇到问题，因为这两个操作系统不共享相同的头文件。

Since the unistd.h is not obviously included, Visual C doesn't know what read() , write() , close() , socklen_t() and bzero() functions are. 由于unistd.h显然不包含在内，因此Visual C不知道read() ， write() ， close() ， socklen_t()和bzero()函数是什么。 Can anyone help me with this? 谁能帮我这个？

I've googled this: Is there a replacement for unistd.h for Windows (Visual C)? 我用Google搜索了这个内容：是否有替换unistd.h for Windows（Visual C）？

I have no idea how unistd.h works, nor do I know how to code my own. 我不知道unistd.h是如何工作的，也不知道如何编写自己的代码。 Can someone please link me to one? 有人可以把我链接到一个吗？

2 个解决方案

read , write and close are in <io.h> , just like they traditionally were on Unix. read ， write和close都在<io.h> ，就像它们传统上在Unix上一样。

Offhand, I don't know of a bzero being included on Windows at all -- if you care at all about portability, you normally want to use memset instead. 另外，我根本不知道Windows中包含的bzero - 如果你完全关心可移植性，你通常想要使用memset 。

socklen_t isn't normally used on Windows -- most things that would be socklen_t on Unix use either size_t or int on Windows ( socklen_t on Unix is currently another reference to the same underlying type as size_t , added in case it might be useful someday -- aka, a solution in search of a problem). socklen_t通常不在Windows上使用 - 大多数在Unix上使用socklen_t东西在Windows上使用size_t或int （Unix上的socklen_t目前是另一个与size_t相同的底层类型的引用，如果有一天它可能有用的话 - - 又称，寻找问题的解决方案）。

Your best bet is to use MinGW to compile the program, which includes (among other things) GCC (and its headers). 最好的办法是使用MinGW编译程序，其中包括（除其他外）GCC（及其标题）。 Try installing that and then compiling your program and see if everything works OK. 尝试安装，然后编译您的程序，看看是否一切正常。