complier error

Code:

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#include "stdafx.h"
#include <iostream>
#include <ctime>

using namespace std;

string randWord();

int main()
{

        string guessWord = randWord(); //sets the returning value in guessWord

        cout << guessWord;            //displays the random word

        return 0;
}

string randWord()
{
        string wordBankArray[3] = {"random", "words", "here"};

        srand(static_cast<int>(time(0)));
        int randWord = rand() % (2 + 1);

        return wordBankArray[randWord];
}

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I'm getting this complier error.

Code:

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1>------ Build started: Project: Hangman Project, Configuration: Debug Win32 ------
1>Compiling...
1>Hangman Project.cpp
1>c:\documents and settings\angel\desktop\random\random project\random project.cpp(16) : error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion)

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#include <string>