input/ouput/ looping

I need help with the following assignment. I just can't seem to get it to work? It just creates a blank file for addresses.
If anyone can tell me what I am doing wrong I will be forever grateful..

Ok, here's the assignment:
You're working for a company that's building an email list from files of mail messages. They would like you to write a program that reads a file called mail.dat, and that outputs every string containing the @ sign to file addresses.dat. For the purpose of this project, a string is defined as it is by the C++ stream reader - a contiguous sequence of non-whitespace characters.
Here is what mail.dat has in it:
---------------------------------------------------------------------------
From: kadcock@clevelandstatecc.edu
Date: June 4, 2005

To: Joe_student@tbrschool.edu

Joe,

Hope you have a good semester.

Regards,
Ken Adcock
---------------------------------------------------------------------------
Here is what I have done:

Code:

#include <iostream>
#include <fstream> 
#include <string>

using namespace std;

int main()
{
	
	ifstream inFile;
	ofstream outFile;
	string tempString;
	
	
	inFile.open("mail.dat");
	outFile.open("addresses.dat");
	
	while(inFile)
	{
		inFile>>tempString;
		if(tempString.find('@')!=string::npos)
			outFile<<tempString;
		
	}
	
	inFile.close();
	outFile.close();
	return 0;
}

 

thank you