mlita

#include <fstream>
#include <iostream>
#include <iomanip>

using namespace std;

struct TimeVal
{
	int h;
	int m;
	int s;
};

void TxtInBin(char* input, char* output)
{
	fstream in(input, ios::in);
	fstream out(output, ios::out, ios::binary);

	if (in.fail() || out.fail())
	{
		cout << "couldn't open a file" << endl;
		in.close();
		out.close();
		exit(-1);
	}
	else
	{
		int n;
		double threshold;

		in >> n >> threshold;

		out.write((char*)&n, sizeof(int));
		out.write((char*)&threshold, sizeof(double));

		TimeVal* time = new TimeVal[n];
		double speed;

		for (int i = 0; i < n; i++)
		{
			in >> time[i].h;
			in.ignore();
			in >> time[i].m;
			in.ignore();
			in >> time[i].s;
			in >> speed;
			out.write((char*)&time[i], sizeof(TimeVal));
			out.write((char*)&speed, sizeof(double));
		}
	}

	in.close();
	out.close();
}

void Read(char* input, int& n, TimeVal*& time, double*& arrWithData, double& threshold, int& count)
{
	fstream in(input, ios::in, ios::binary);

	if (in.fail())
	{
		cout << "couldn't open a file" << endl;
		in.close();
		exit(-1);
	}
	else
	{
		in.read((char*)&n, sizeof(int));
		in.read((char*)&threshold, sizeof(double));

		arrWithData = new double[n];
		time = new TimeVal[n];

		count = 0;
		for (int i = 0; i < n; i++)
		{
			in.read((char*)&time[i], sizeof(TimeVal));
			in.read((char*)&arrWithData[i], sizeof(double));

			if (arrWithData[i] > threshold)
				count++;
		}
	}
	in.close();
}

void Res(double& threshold, int& n, TimeVal*& time, double*& arrWithData, int& count, TimeVal*& timeRes, double*& arrWithRes)
{
	arrWithRes = new double[count];
	timeRes = new TimeVal[count];
	count = 0;

	for (int i = 0; i < n; i++)
	{
		if (arrWithData[i] > threshold)
		{
			timeRes[count] = time[i];
			arrWithRes[count] = arrWithData[i];
			count++;
		}
	}
}


void Write(char* output, int& count, TimeVal*& time, double*& arrWithRes)
{
	fstream out(output, ios::out, ios::binary);

	if (out.fail())
	{
		cout << "couldn't open a file" << endl;
		out.close();
		exit(-1);
	}
	else
	{
		out.write((char*)&count, sizeof(int));
		for (int i = 0; i < count; i++)
		{
			out.write((char*)&time[i], sizeof(TimeVal));
			out.write((char*)&arrWithRes[i], sizeof(double));
		}
	}

	out.close();
}

void BinInTxt(char* input, char* output)
{
	fstream in(input, ios::in, ios::binary);
	fstream out(output, ios::out);

	if (in.fail() || out.fail())
	{
		cout << "couldn't open a file" << endl;
		out.close();
		in.close();
		exit(-1);
	}
	else
	{
		int count;

		in.read((char*)&count, sizeof(int));

		out << count << endl;

		double* arrWithRes = new double[count];
		TimeVal* time = new TimeVal[count];

		for (int i = 0; i < count; i++)
		{
			in.read((char*)&time[i], sizeof(TimeVal));
			in.read((char*)&arrWithRes[i], sizeof(double));
		}

		for (int i = 0; i < count; i++)
		{
			out.width(2);
			out.fill('0');
			out << time[i].h << ":";

			out.width(2);
			out.fill('0');
			out << time[i].m << ":";

			out.width(2);
			out.fill('0');
			out << time[i].s << " ";

			out << fixed << setprecision(1) << arrWithRes[i] << endl;
		}

		delete[] arrWithRes;
	}

	out.close();
	in.close();
}

int main()
{
	int n;
	double threshold;

	int count;
	TimeVal* time;
	double* arrWithData = {};
	TimeVal* timeRes;
	double* arrWithRes = {};

	char input[] = "input.txt";
	char output[] = "output.txt";
	char inputb[] = "input.bin";
	char outputb[] = "output.bin";

	TxtInBin(input, inputb);

	Read(inputb, n, time, arrWithData, threshold, count);
	Res(threshold, n, time, arrWithData, count, timeRes, arrWithRes);
	Write(outputb, count, timeRes, arrWithRes);

	BinInTxt(outputb, output);

	delete[] time;
	delete[] arrWithData;
	delete[] arrWithRes;
	delete[] timeRes;

	system("pause");
	return 0;
}