Thread: Why won't fstream file open?

What is wrong with this code? The error message runs every time, and the file is never opened. It worked ok when it was ofstream instead of just fstream. I can't figure out what's wrong. Thanks!

Code:

#include "person.h"
#include <iostream>
#include <fstream>

using namespace std;

int main()
{
	fstream personOut("nameAge.txt", ios::in | ios::out);
	if (!personOut) {cout << "Error!";}