Finding the largest and smallest integer in a set using while loop

[MarkyMark]

I've been working at this for awhile and it seems like it should be correct but it isn't giving me the desired output. Here's my code.

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

using namespace std;

void main()
{
	string dataFile("ExamScores.txt");
	ifstream fin;

	fin.open(dataFile);

	int s(0), ns(0), sns(0);
	int total_score(0);
	int max = s;
	int min = s;

	fin >> s;


	while( ! fin.eof() )
	{
		++ns;

		total_score += s;

		if(s > max)
		{
			max = s;
		}
		
		if(s < min)
		{
			min = s;
		}

	
		fin >> s;
	}//end file read loop
	cout << total_score/ns << endl;
	cout << "Max: " << max << endl;
	cout << "Min: " << min << endl;
	fin.close();


}

And here is my output when I run the program.
75
Max: 90
Min: 0
Press any key to continue . . .
I am reading from a file in this program which contains a set of 30 numbers and it has the average correct and the max correct but the minimum number in the set is 56 however it keeps giving me a zero for the min. Any help is appreciated.

[mutexe]

you need to initialise min to be a very large number.

[MarkyMark]

I actually did that afterwards. I initialized it to 56 because it's the only reason I could think of why I keep getting zero although I'm not sure if that's proper programming but it's all I've got for now. Thanks for the help!

[mutexe]

well, if the highest realistic exam score is 100, you could initialise 'min' to 100. i.e. the maximum value your 'min' variable could ever be. If that makes sense? :)

[48T7M4Gy]

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

using namespace std;

void main()
{
	string dataFile("ExamScores.txt");
	ifstream fin;

	fin.open(dataFile);

	int s(0), ns(0), sns(0);
	int total_score(0);
        int s, max;//

	//int max = s;
	//int min = s;

	 fin >> s;

	max = s;
	min = s;


	while( ! fin.eof() )
	{
		++ns;

		total_score += s;

		if(s > max)
		{
			max = s;
		}
		
		if(s < min)
		{
			min = s;
		}

	
		fin >> s;
	}//end file read loop
	cout << total_score/ns << endl;
	cout << "Max: " << max << endl;
	cout << "Min: " << min << endl;
	fin.close();


}