相关疑难解决方法(0)

这是我的代码,如何修复此错误？

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

using namespace std;

int main()
{
    string title = "THE WORLD OF PIRATES";
    cout << title << endl;
    cout << " Welcome to the world of pirates";

    cin.get();

    return 0;
}

错误是

binary '<<' : no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion)