---

// 1

/*#include <iostream>
#include <math.h>
#include <iomanip>
using namespace std;

float get_y(float x)
{
	return (x * x * x + 2 * x) / (3 * cos(sqrt(x)) + 1);
}

void main() {
	// a
	{
		const float delta_x = 0.4;
		cout << "a)" << endl
			<< setw(10) << "X" << setw(10) << "Y" << endl;
		for (float x = 0; x <= 2; x += delta_x)
			cout << setw(10) << x << setw(10) << get_y(x) << endl;
	}
	cout << endl;
	// b
	{
		const float delta_x = 0.8;
		char count = 7;

		cout << "b)" << endl
			<< setw(10) << "X" << setw(10) << "Y" << endl;

		for (float x = 0.3; count > 0; x += delta_x,count--)
			cout << setw(10) << x << setw(10) << get_y(x) << endl;
	}
}*/

//3

#include <iostream>
#include <math.h>
#include <iomanip>
using namespace std;

void main() {
	
	float x_start, x_end, x_delta, y;

	cout << "x start >> ";
	cin >> x_start;

	cout << "x end >> ";
	cin >> x_end;

	if (x_end < x_start)
		return;

	cout << "x delta >> ";
	cin >> x_delta;

	cout << endl << "results" << endl
		<< setw(10) << "X" << setw(10) << "Y" << endl;

	for (float x = x_start; x <= x_end; x+=x_delta)
	{
		if (x < 0 || x > 8)
			continue;

		if (x <= 0.5)
			y = atan(x) + exp(x);
		else
			y = log(x + sin(x));

		cout << setw(10) << x << setw(10) << y << endl;
	}
}