Eclipse - C++ hello world project's error

I am using a 64-bit Winodws 7. I've downloaded a CDT Eclipse and have downloaded MinGW. After that, I created a c++ hello world project. This is the code:

#include <iostream>
using namespace std;

int main() {
    cout << "!!!Hello World!!!" << endl; // This is supposed to print "Hello World!!!"
    return 0;
}

But when I want to run it, this error pops up: "Launch failed. Binary not found."

Any help would be highly welcomed.