ch-03-ex-02-solution.cpp
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	/*
	* chapter-03-exercise-02.cpp
	*
	* Count number of rows in a file
	*
	* Created on: Sep 2, 2012
	* Author: Radu Popescu <radu.popescu@epfl.ch>
	*/

	#include <iostream>
	#include <fstream>
	#include <string>

	int main(int argc, char* argv[])
	{
	std::ifstream read_file("x_and_y.dat");
	if(!read_file.is_open()) {
	std::cout << "Error opening file." << std::endl;
	return 1;
	}

	int number_of_rows = 0;

	// This loop will read an empty line between the final EOL and the EOF
	// characters
	while(!read_file.eof()) {
	double dummy1, dummy2, dummy3, dummy4;
	read_file >> dummy1 >> dummy2 >> dummy3 >> dummy4;
	number_of_rows++;
	}
	std::cout << "Number of rows = "
	<< number_of_rows << " (false)" << std::endl;

	// We try again
	number_of_rows = 0;
	read_file.clear();
	read_file.seekg(std::ios::beg);
	while(!read_file.eof()) {
	std::string line;
	getline(read_file, line);
	if (line.compare("") != 0) {
	number_of_rows++;
	}
	}
	std::cout << "Number of rows = "
	<< number_of_rows << " (true)" << std::endl;

	read_file.close();

	return 0;
	}