[FIXED] "string could not resolved" error in Eclipse for C++ (Eclipse can't resolve standard library)

Issue

I have the following code in eclipse for c++ and it's underlining string and cout and saying could not be resolved.

#include <string>
#include <iostream>

using namespace std;


int main()
{
    string s;
    s = "hello world";
    cout << s;
    return 0;

}

Anyone know why?

edit: screenshot

Edit: I have found a solution thanks everyone (see answers).

Solution

The problem was that I needed to have both minGW and MSYS installed and added to PATH.

The problem is now fixed.

Answered By - code511788465541441