错误 C2679：二进制 '>>' : 未找到采用“std::string”类型右侧操作数的运算符（或者没有可接受的转换）
请不要与标题混淆，因为有人已经问过它，但上下文不同
Visual C++ 编译器 (VS2008) 中的以下代码不会被编译，而是抛出此异常
std::ifstream input (fileName);
while (input) {
string s;
input >> s;
std::cout << s << std::endl;
};
：代码在 cygwin g++ 中编译良好。有什么想法吗？
Please don't confuse with the title as it was already asked by someone but for a different context
The below code in Visual C++ Compiler (VS2008) does not get compiled, instead it throws this exception:
std::ifstream input (fileName);
while (input) {
string s;
input >> s;
std::cout << s << std::endl;
};
But this code compiles fine in cygwin g++. Any thoughts?
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评论（4）
您是否已包含以下所有标头？
我猜你忘了<代码><字符串>。
附带说明：这应该是
std::cout和std::endl。Have you included all of the following headers?
<fstream><istream><iostream><string>My guess is you forgot
<string>.On a side note: That should be
std::coutandstd::endl.添加到 @sbi 答案，在我的例子中，区别在于包括< /code>（在 VS 2017 下）。
请参阅以下答案：类似案例答案
Adding to @sbi answer, in my case the difference was including
<string>instead of<string.h>(under VS 2017).See the following answer: similar case answer
include尝试包含字符串头文件和
即使没有
include <string>Try including string header file along with
<iostream>file.It will work in some compilers even without the
<string>because settings for different compilers are different and it is the compiler that is responsible for reading the preprocessor files that start with '#' symbol to generate a obj file.除了别人说的。我的应用程序需要以下代码才能成功编译。
另一个解决方法是转到项目属性 ->一般->字符集并选择“使用多字节字符集”（您不需要使用 c_str() 来输出字符串）
使用 MBCS 有缺点，因此如果您打算本地化您的软件，我建议不要这样做。
In addition to what others said. The following code was necessary in my application to compile succesfully.
Another work-around to this is go to project properties -> General -> Character Set and choose "Ues Multi-Byte Character Set" (You won't need to use c_str() to output the string)
There's disadvantages to using MBCS so if you plan to localize your software, I'd advize against this.