#include <algorithm>
#include <iostream>
#include <string>
#include <iterator>
#include <vector>
#include <fstream>

using namespace std;

class textfile {
	string text;
	vector<string> links;

	int extractlinks();
	void removecrlf();
public:
	printlinks();
	textfile(string filename);
	~textfile();
};

textfile::~textfile() {
	links.clear();

};

void textfile::removecrlf() {
	for (int i=0;i<text.length();i++) {
		if (text[i]=='\r' || text[i]=='\n') 
			text[i]=' ';
	}
}

int textfile::extractlinks() {
	int count=0;
	int pos=0;
	do {
		int startoflink= text.find("<a",pos,2);
		if (startoflink == string::npos)
			break;
		pos=startoflink;
		int endoflink = text.find("</a>",pos);
		if (endoflink== string::npos)  // hit the end?
			endoflink = text.size();
		endoflink += 4; // 

		// Extract url and add to the list
		pos = endoflink + 1;
		links.push_back( text.substr(startoflink, endoflink-startoflink) );
		++count;
	} while (true);
	return count;
}

textfile::textfile(string filename) {
   string temp;
   std::ifstream file;
   file.open(filename.c_str(), std::ios::in | std::ios::binary);
   if (file.is_open() ) {
	   file.seekg(0, std::ios::end);
	   std::streamsize length = file.tellg();
	   if (length != 0)
			{
		    text.reserve( length ); 
			file.seekg(0, std::ios::beg);
			while(getline(file, temp)) // Discards newline char
				text += temp;
			}
	   }
   file.close();
   removecrlf();
   extractlinks();
   sort( links.begin(),links.end());
}

textfile::printlinks() {
	for (int i=0;i < links.size(); i++) 
	{
		string url= links[i];
		cout << "Link " << i+1 << ":  " << url << endl;
	}
}

int main(int argc, char* argv[])
{
	textfile test("Your file name here");
	test.printlinks();
	return 0;
}