#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream.h>
#include <winsock.h>
#include <conio.h>


int IPtoDec (char *ip);

int main() {
	using namespace std;
	WSAData wData;

	if (WSAStartup(MAKEWORD(2,2), &wData) == SOCKET_ERROR) {
		cout << "Winsock init error\n";
		cout << "\n\nPress any key to exit.\n";
		getch(();
		return 1;
	}

	hostent *h = NULL;
	char hostname[80];

	cout << "\n\n"
		<< "########################################\n"
		<< "# Host Name to Decimal Equivalent v1.0 #\n"
		<< "#         by: ThermoFish (JW)          #\n"
		<< "########################################\n";
	cout << "Enter hostname: ";
	cin >> hostname;
	h = gethostbyname(hostname);

	if (h == NULL) {
		cout << "Could not resolve " << hostname << endl;
		cout << "\n\nPress any key to exit.\n";
		getch();
		return 1;
	}

	char *ip = inet_ntoa(*(reinterpret_cast<in_addr*>(h->h_addr)));
	cout << "\nIP address :" << ip << endl;

	IPtoDec(ip);

	cout << "\nPress any key to exit.\n";
	getch();
	return 0;
}

// Function to convert from IP to decimal

int IPtoDec (char *ip) {

	{
		using namespace std;
		char *cptr = strtok (ip, ".");
		int shift = 24;
		unsigned long acc = 0L;

		while (cptr != NULL) {
			acc += atol(cptr) << shift;
			shift -= 8;
			cptr = strtok (NULL, ".");
		}

		cout << "\nIP as Decimal: " << acc << endl;
	}
return 0;
}