Trouble with fstream

[dusty]

I'm trying to pull up a file called "test" to just run some temperatures through a program. The file is just numbers. The file should stop being read when it encounters a -1. I wrote the program around the lack of ability to pull up the file but hopefully I won't have to rewrite it from scratch. Code is as follows:

EDIT: found error in code so it actually reads the file now... I think. However it just prints all counters as 0 and the average temp is -1#J which I'm guessing isn't accurate.

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

using namespace std;

int tempfunction (int);
double average (int);

void main()
{
	ifstream inFile; ofstream outFile;
	int temp, addtemp = 0, cnt = 0, coldcnt = 0, pleasentcnt = 0, hotcnt = 0; string fName;

	cout << "Enter file name: "; cin >> fName;
	inFile.open(fName + ".txt");
	if (!inFile.fail())
	{
		cout << endl << "Temperature data:" << endl << endl;
		while (!(tempfunction (temp) == -1))
		{
			cnt++;
			inFile >> temp;
			cout << right << setw (3) << cnt << " " << right << temp << " - ";
			if (tempfunction (temp) == 1)
			{
				cout << "COLD" << endl;
				coldcnt++;
			}
			else if (tempfunction (temp) == 2)
			{
				cout << "PLEASENT" << endl;
				pleasentcnt++;
			}
			else
			{
				cout << "HOT" << endl;
				hotcnt++;
			}
			addtemp += temp;
		}
	}
	inFile.close();
	cout << endl << "Counters:" << endl;
	cout << " Hot: " << hotcnt << "    Pleasent: " << pleasentcnt << "    Cold: " << coldcnt << endl << endl;
	cout << " Average temp = " << fixed << setprecision(2) << double (addtemp) / cnt << endl;
}
int tempfunction (int temp)
{
	if  (temp == -1)
		return 0;
	else if	(temp < 60)
		return 1;
	else if (60 <= temp && temp <=84)
		return 2;
	else
		return 3;
}

[SamuelAdams]

line 21 should be
while ((tempfunction (temp) != 0))