//Start of first (#1) program

#include <fstream>
#include <iostream>

int main(int argv, char** argc)
{
	int Summ{0}, tmp{0};
	std::ifstream In;

	In.open("liczby.txt");

	while(!In.eof())
	{
		In >> tmp;
		Summ += tmp;
		std::cout << tmp << ' ';
	}

	In.close();

	//std::cout << Summ; //Output Summs in terminal (I don't know where need output this result)
}

//End

//Start of second (#2) program

#include <fstream>
#include <iostream>

int main(int argv, char** argc)
{
	int tmp{0};
	std::ofstream Out;

	Out.open("liczby.txt");

	while(std::cin >> tmp, tmp != 0)
	{
		Out << tmp << ' ';
	}

	Out.close();
}

//End

//Start of third (#3) program

#include <iostream>

int main(int argv, char** argc)
{
	int FirstNum, *Pointer = &FirstNum;

	std::cin >> *Pointer;
}

//End

//Start of fourth (#4) program

#include <iostream>

struct TData {
	int Day;
	int Month;
	int Year;
};

int main(int argv, char** argc)
{
	TData Firt, *Point = &Firt;

	std::cin >> Point->Day >> Point->Month >> Point->Year;

	//std::cout << Firt.Day << ' ' << Firt.Month << ' ' << Firt.Year; //For result check (Uncomment first two slash for result check)
}

//End