Thread: fstream dilemma

Well I thought I had this all figured out. Something is wrong with my logic and I can't figure it out. I am supposed to find the median of a group of numbers in a file that I have created (theData.dat), but obviously if there are an even number of integers in the file, it gets a little tricky because you have to pull the two middle numbers from the file and divide them by 2. AND I am just getting used to using while loops. Can someone give me some tips?

Code:

#include <fstream>
#include <iostream>

using namespace std;

int main()
{
	ifstream In;
	In.open("theData.dat");   // opens file
	int aNumber;   
	int count = 0;
	int median, m1, m2;
	int countAgain = 0;
	while (In >> aNumber)
	{
		count++;        // counts the number of int in the file
	}
	In.close();             // allows me to run through the file from the beginning
	In.clear();
	In.open("theData.dat");
	while (In >> aNumber)
	{
		countAgain++;      
		if ((count % 2 != 0) && (countAgain == (count + 1 ) / 2))
		{
			median = aNumber;
		}
		else
		{
			while (countAgain == count / 2)
			{
				m1 = aNumber;
			}
			while (countAgain == (count + 2) / 2)
			{
				m2 = aNumber;
			}
			median = (m1 + m2) / 2.0;
		}
		
	}
	cout << "The median of this group of numbers is " << median << "." << endl;
	return 0;
}

Code:

while (countAgain == count / 2)
			{
				m1 = aNumber;
			}
			while (countAgain == (count + 2) / 2)
			{
				m2 = aNumber;

while doesn't check if something is true; "if" checks if something is true.

oh HO HO! Thank you!

I just checked it and that worked. Thank god for this forum.