[Eclipse] Symbol 'std' could not be resolved

Hello,

So I'm used to using Eclipse when I program in Java.
I am now learning C++, but encountered a problem already.

I downloaded Eclipse C++ and the Cygwin toolchain.



I selected New > Create new sourcefile and named it Main.cpp

I entered some basic code in it like this:

#include <iostream>

using namespace std;

which gives me this error:



After building it I get this:



I don't get this in other IDE's, so I'm guessing it's a setting in Eclipse I missed.
I would rather not switch to another IDE since I've used Eclipse since I started programming.

Thanks in advance,
Worldofwar.