CODEWITHSUNDEEP
c++extern
Danny
Danny

Reputation: 9624

Can't use cout/endl when extern "C"

I hope someone can help me on this small problem as I'm getting no where at all. Firstly, heres the code:

#include<string>
#include<iostream>
#include<Windows.h>

using namespace std;

extern "C"
{
#include<hidsdi.h>
#include<SetupAPI.h>
}

int main()
{
    int iQuit;

    cout << "Testing Program" << endl;

    return 0;
}

It won't let me use the std stuff (ie cout, cin, endl etc). It will only allow me to use it when I take out all the extern "C" code... Why is that? And is there a way around this?

EDIT: Sorry, forget to tell you the exact error: It says identifier "cout" is undefined

Thanks

Upvotes: 6

Views: 1401

Answers (2)

Danny
Danny

Reputation: 9624

I've found out the problem, I weren't adding the directories in the correct order in VC++ Directories.

The order should be:

C:\WinDDK\7600.16385.1\inc\ddk
$(VCInstallDir)include
$(VCInstallDir)atlmfc\include
C:\WinDDK\7600.16385.1\inc\api
$(WindowsSdkDir)include
$(FrameworkSDKDir)\include

Don't know why it needs to be in this order, but it works now... Very strange...

Upvotes: 1

David Heffernan
David Heffernan

Reputation: 612993

There is something wrong with your compilation environment. There is nothing wrong with that code. It compiles and runs fine.

In a comment to the question you say:

I'm learning to write a driver so I can do stuff with my devices like keyboards and mouses, so I'm using the WDK. Correct me if I'm wrong, but I thought you need to use extern "C" to use those header files?

In fact you should simply write code in C rather than C++ for driver development.

Upvotes: 3

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