Visual Studio 2015 & 2017 doesn't recognize std

Question

Hello,

I've written simple piece of code which compiles and works perfectly on any other program which can compile and run C++,

but when I try to run it from VS 2015 on my laptop or on VS 2017 from my other laptop, it won't build it - I get an error saying it doesn't recognize std e.g. it says "string is not a member of std"

I've checked and I think that I've installed all necessary extensions for C++ to work.

How can I fix it?

Thank you.

Answer 1

Show a small but complete example of code that produces that error.

Also be sure that you have the right #include statement:

#include <string>

• Wayne

Answer 2

the code:

std::ostringstream ss;
int i = 7;

ss << std::hex << std::showbase << i;

std::string str = ss.str();

const char *output = str.c_str();

   

the headers I've included:

#include <stdlib>
#include <iostream>
#include <sstream>
#include <iomanip>
#include <string>
#include <strstream>

I also get an error "cannot open source file "stdlib""

Answer 3

As far as I'm concerned, you should use "#include<stdlib.h>" instead of "#include<stdlib>".

And I agree with RLWA32, you could try to use "#include <cstdlib>". It includes the C Standard library header <stdlib.h> and adds the associated names to the std namespace. For more details I suggest you could refer to the Doc:<cstdlib>.