C++ and string conversion

#include <iostream>#include <fstream>#include <sstream>#include <string>#include <vector>void main() {	std::ifstream file("Data.txt"); // Create a file input stream	if(file.fail()) { // Check for failure!		std::cout << "Failed to load \"Data.txt\"\n";		return;	}	// We will read a line of data into this string	std::string line = "";	while(!file.eof()) {		std::getline(file, line); // Read the line		// I don't know if you know what the two things below are, so I'll		// explain them a bit...		// A string stream is just like any other stream, except that it		// performs actions on a string... so lets feed it the line we just		// got, and then use it to parse the data		std::istringstream parser(line);		// A vector is a container class from the STL that allows you to		// add and remove elements from it at runtime, rather than an array		// where you have a fixed size... look it up on the web for more info		std::vector<int> data;		while(!parser.eof()) {			int buffer; // Create a temporary buffer			parser >> buffer; // Read the data into the buffer			data.push_back(buffer); // Add the data to the vector		}				// Now we have a vector full of the data, yay!		// We can do whatever we want with it...	}	file.close(); // Clean up!}