error C2679: binary '>>' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion)

user_125904 0
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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?

compiler-errors cygwin visual-c++ c++
4 Answers

In addition to what others said. The following code was necessary in my application to compile succesfully.

std::cout << s.c_str() << std::endl;

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.

user_65011160

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.

user_86595020
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