#include <iostream>
#include <fstream>
#include <string>

const unsigned int MAX_SENTENTECE_SIZE = 100U;

int Task_1();
int Task_2();
int Task_3();
int Task_4();
int Task_5();

int main()
{
	int result = 0;

	result = Task_1();
	if (result != 0)
	{
		return result;
	}
	result = Task_2();
	if (result != 0)
	{
		return result;
	}
	result = Task_3();
	if (result != 0)
	{
		return result;
	}
	result = Task_4();
	if (result != 0)
	{
		return result;
	}
	result = Task_5();
	if (result != 0)
	{
		return result;
	}

	return result;
}

void PrintArray(int* pArr, const size_t count, std::string s)
{
	std::cout << s;
	for (size_t i = 0U; i < count; i++)
	{
		std::cout << "Array[" << i << "] = " << pArr[i] << std::endl;
	}
}

void PrintArray(int** pArr, const size_t count)
{
	for (size_t i = 0U; i < count; i++)
	{
		for (size_t j = 0U; j < count; j++)
		{
			std::cout << "\t" << pArr[i][j];
		}
		std::cout << std::endl;
	}
}

void FillArrayByTwoPowers(int* pArr, const size_t count)
{
	pArr[0U] = 1;
	for (size_t i = 1U; i < count; i++)
	{
		pArr[i] = pArr[i - 1U] << 1;
	}
}

void FillRandArray(int** ppArr, const size_t count)
{
	for (size_t i = 0U; i < count; i++)
	{
		for (size_t j = 0U; j < count; j++)
		{
			ppArr[i][j] = rand();
		}
	}
}

int FillFileBySmth(std::string filename)
{
	std::string s = "This is a small text with little quantity of symbols created in Microsoft Visual Studio.\n";
	std::ofstream outfile(filename);

	if (!outfile)
	{
		return -2;
	}
	
	std::cout << "File \"" << filename << "\" is open successfully.\n";

	outfile << s;

	outfile.close();
	return 0;
}

int GlueTwoFilesInThird(std::string filename_1, std::string filename_2, std::string outfilename)
{
	std::string s1 = "";
	std::string s2 = "";
	std::ifstream in_file_1(filename_1);
	std::ifstream in_file_2(filename_2);

	if (!in_file_1 || !in_file_2)
	{
		return -2;
	}
	std::cout << "Files \"" << filename_1 << "\" and \"" << filename_2 << "\" are succesfully open.\n";
	
	while (!in_file_1.eof())
	{
		char tmp[MAX_SENTENTECE_SIZE + 1] = {};
		in_file_1.getline(tmp, MAX_SENTENTECE_SIZE, '\n');
		s1 += tmp;
		s1 += "\n";
	}
	while (!in_file_2.eof())
	{
		char tmp[MAX_SENTENTECE_SIZE + 1] = {};
		in_file_2.getline(tmp, MAX_SENTENTECE_SIZE, '\n');
		s2 += tmp;
		s2 += "\n";
	}

	in_file_1.close();
	in_file_2.close();
	std::cout << "Files \"" << filename_1 << "\" and \"" << filename_2 << "\" are closed.\n";

	std::ofstream out_file(outfilename);
	if (!out_file)
	{
		return -2;
	}
	std::cout << "File \"" << outfilename << "\" is successfully open.\n";

	out_file << s1 + s2;
	out_file.close();
	std::cout << "File \"" << outfilename << "\" is closed.\n";

	return 0;
}