Sending all output to a file

[TommyGun4]

I am trying to get all of my answers/numbers to be outputted to my .txt file, but I am only getting the last value in the set for each of the values, where did I go wrong?

//A program to compute a pair of estimates of π
//Information is sent to a file instead of console
#include <iostream>
#include <string>
#include <math.h>
#include <fstream>
#include <iomanip>
using namespace std;

int main(void)
{
	const char filepath[] = "C:\\CoutputFiles\\File2.txt";
	const char ErrorMessage[] = "Can't open file ";
	fstream OutStream(filepath, ios::out);
	if (OutStream.fail())
	{
		cerr << ErrorMessage << filepath;
		exit(-1);
	}
	int i;
	int hex = 6;
	int sides;
	double tolerance, fx, gx, radius, inscribed_perimeter, circumscribed_perimeter;
	char zzz;
	cout << "Sides        " << "  Inscribed Perimeter" << "      Circumscribed Perimeter" << endl;

	for (i = 0, sides = hex, radius = 0.5; i < 30; i++)
	{
		inscribed_perimeter = radius*sides;
		fx = sqrt(0.25 - (radius*radius) / 4);
		gx = radius / (2 * fx);
		circumscribed_perimeter = gx*sides; 
		cout << sides << "              ";
		cout << std::setprecision(15) << inscribed_perimeter << "             ";
		cout << std::setprecision(15) << circumscribed_perimeter << endl;
		//printf ("%d      \t%.14f\t%.14f\n", sides, inscribed_perimeter, circumscribed_perimeter);
		tolerance = (circumscribed_perimeter - inscribed_perimeter);

		if (tolerance < 0.000000000000001)
		{
			break;
		}
		radius = sqrt((radius*radius) / 4 + ((0.5 - fx)*(0.5 - fx)));
		sides *= 2;
	}
	OutStream << "Sides = " << sides;
	OutStream << " Inscribed Perimeter = " << std::setprecision(15) << inscribed_perimeter;
	OutStream << " Circumscribed Perimeter = " << std::setprecision(15) << circumscribed_perimeter;
	return 0;
}

[Peter87]

You are only writing to the file on lines 46-48. If you want to output thosethe same variables for each iteration of the loop you could move those lines inside the loop.