gistfile1.txt

#include <sstream>
#include <string>
#include <iostream>

int main()
{
	std::string st("192.255.a.0");
	std::istringstream iss(st);
	std::string st1;
	int count = std::count(st.begin(), st.end(), '.');
	if (count != 3)
		std::cout << "Incorrect IP!\n";
	//std::cout << count << std::endl;
	for(int i=0; i < 4; i++)
	{
		std::getline(iss, st1, '.');
		int number = -1;
		//std::cout << st1 << std::endl;
		stringstream ss(st1);
		ss >> number;
		std::cout << number << std::endl;
		if (number < 0 || number > 255)
		{
			std::cout << "Incorrect IP!\n";
			break;
		}
	}
	return 0;
}