stringstream problem

I'm trying to insert a string into my stringstream but I'm getting errors. Any thoughts?

Code:

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//Dustin Nicholes
//CS 240
//LinkedList driver class

#include "stopWord.h"
#include "URL.h"
#include <fstream>
#include <iostream>
#include <sstream>
#include <stdlib.h>
using namespace std;

int main(int argc, char* argv[])
{
        //Get the arguments from the command line
        string startURL(argv[1]);
        string outputFile(argv[2]);
        string stopFile(argv[3]);

        //Send the start URL to a class that determines if it is HTML and can also do things like determine the Absolute URL
        //This is also where the robot filiter is started from
        URL url(startURL);

        //Open the stop words file
        fstream file;
        file.open(stopFile.c_str());
        stopWord::stopWord(file);

        //Setup the structure that will contain unprocessed URLs
        stringstream URLsToProcess;
        URLsToProcess<<startURL;    //THIS LINE WON'T WORK!!
       
        //While we still have unprocessed URLs, Process them!
        string currentURL;
        while(currentURL<<URLsToProcess)
        {
                //Create a class that can parse the words, headers, new URLs, etc...
                PageParser parser(currentURL, stopWords);
               
                /*
                //Create a new page
                Page* page = new Page(parser);
                if(pages doesn't contain this new page already)
                {
                        //Add the new page to the data structure containing all of the processed pages
                        pages.add(page);
                        //Retrieve all of the new URLs from the page and add them to the pseudo queue
                        URLsToProcess<<parser.getNewURLs;
                }
                */
        }
       
        //Write the file to XML
        std::ofstream outFile(outputFile);
        //XMLwriter output(pages, startURL);
        //output.writeOut(outFile);
       
        return 0;
}

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If it helps, here is one of several errors issued by the compiler

Code:

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driver.cpp(35) : error C2784: 'std::basic_ostream<_Elem,_Traits> &std::operator <<(std::basic_ostream<_Elem,_Traits> &,const std::basic_string<_Elem,_Traits,_Alloc> &)' : could not deduce template argument for 'std::basic_ostream<_Elem,_Traits> &' from 'std::string'
1>        c:\program files\microsoft visual studio 9.0\vc\include\string(537) : see declaration of 'std::operator <<'

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This is not C.

BTW, the reason for the error is probably that you haven't #include'd the <string> header.

My apologies. A bien tot!