#include <fstream.h>
#include <math.h>

const double PI = 3.14159267;

int main ()
{
	ifstream	infile;
	double		degrees;
	double		minutes;
	double		angle;
	double		distance;
	double		xpos = 0.0;
	double		ypos = 0.0;
	char		thefile[30];

	cout << "Enter survey data file name: ";
	cin >> thefile;
	infile.open(thefile);

	infile >> degrees;
	while (infile)
	{
		infile >> minutes;
		infile >> distance;
		angle = (degrees + minutes / 60.0)/360.0 * 2.0 * PI;
		xpos = xpos + sin(angle) * distance;
		ypos = ypos + cos(angle) * distance;
		infile >> degrees;
	}
	distance = sqrt (xpos * xpos + ypos * ypos);
	cout << "Start-end distance: " << distance << endl;
	if (distance < 1.0) 
		cout << "The survey closes." << endl;
	else
		cout << "The survey does not close." << endl;
	infile.close();
#include "endtest.h"
	return 0;
}