error C2065: 'cout' : undeclared identifier

user_207138 0
Viewed 334513

I am working on the 'driver' part of my programing assignment and i keep getting this absurd error:

error C2065: 'cout' : undeclared identifier

I have even tried using the std::cout but i get another error that says: IntelliSense: namespace "std" has no member "cout" when i have declared using namespace std, included iostream + i even tried to use ostream

I know it's a standard noob question but this has stumped me and I'm a novice (meaning: I've programed before...)

#include <iostream>
using namespace std;

int main () {
    cout << "hey" << endl;
 return 0;
}

I'm using Visual Studio 2010 and running Windows 7. All of the .h files have "using namespace std" and include iostream and ostream.

std visual-studio-2010 namespaces c++
26 Answers

Take the code 

#include <iostream>
using namespace std;

out of your .cpp file, create a header file and put this in the .h file. Then add

#include "whatever your header file is named.h"

at the top of your .cpp code. Then run it again.

user_5565870

is normally stored in the C:\Program Files\Microsoft Visual Studio 8\VC\include folder. First check if it is still there. Then choose Tools + Options, Projects and Solutions, VC++ Directories, choose "Include files" in the "Show Directories for" combobox and double-check that $(VCInstallDir)include is on top of the list.

user_2663210

Had this problem, when header files declared "using namespace std;", seems to be confusing for GNU compiler; anyway is bad style!

Solution was providing std::cout ... in headers and moving "using namespace std" to the implementation file.

user_94377990

In VS2017, stdafx.h seems to be replaced by pch.h see this article,

so use:

#include "pch.h"
#include <iostream>

using namespace std;

int main() {
    cout << "Enter 2 numbers:" << endl;
user_45738390

It was the compiler - I'm now using Eclipse Galileo and the program works like a wonder

user_2071380
Related