// Excercise 2 no.3.cpp : Defines the entry point for the console application.
//
 
#include "stdafx.h"
using namespace std;
 
void getData(double&);
void doCalc();
void printScreen();
void printClosing();
 
ifstream infile;
 
void main()
{	// start main
 
	double n;			// input file values
	float x1 = 0;		// x coordinate 1
	float x2 = 0;		// x coordinate 2
	float y1 = 0;		// y coordinate 1
	float y2 = 0;		// y coordinate 2
 
// ***** open stream file *****
	infile.open ("ergo.txt");	// get data from file
 
	if(infile)
		cout << "Stream ok.\n\n";
	else
		cout << "Stream error.\n\n";
 
// ***** take input from file *****
	getData(n);
 
// ***** do calculations from input file *****
	doCalc();
 
// ***** print results to screen *****
	printScreen();
 
// ***** print closing message *****
	printClosing();
 
}	// end main
 
void getData(double& n)
{	// start getData
 
	while(infile)
	{	// start while loop
		infile >> n;					// print loop from file.
		cout << "\nnumber =\t" << n;
	}	// end while loop
 
	cout << endl;
 
}	// end getData
 
void doCalc()
{	// start doCalc
 
}	// end doCalc
 
void printScreen()
{	// start printScreen
 
}	// end printScreen
 
void printClosing()
{	// start printClosing
 
	int wait;
 
	cout << "\nEnter any key to terminate program.\n";
	cin >> wait;
 
}	// end printClosing

void getData(double& n)
{
   if ( infile >> n )
   {
      cout << "number = " << n << endl;
   }
}

   double x1, x2, y1, y2;		
   // ...
   while ( infile )
   {
      getData(x1);
      getData(x2);
      getData(y1);
      getData(y2);
 
      doCalc();
   }