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

int main()
{
	setlocale(LC_ALL, "Russian");
	double a1, a2, a3, a4, b1, b2, b3, b4, c1, c2, c3, c4, d, e;
	cout << "Введите a:";
	cin >> a1;
	cout << "\nВведите погрешность a:";
	cin >> a2;
	cout << "\nВведите b:";
	cin >> b1;
	cout << "\nВведите погрешность b:";
	cin >> b2;
	cout << "\nВведите c:";
	cin >> c1;
	cout << "\nВведите погрешность c:";
	cin >> c2;
	a3 = a1 - a2;	a4 = a1 + a2;	d = abs(a4 - a3); e = (a3 + a4) / 2;
	cout << "\n" << a3 << "\t\t" << a4 << "\t\t" << d << "\t\t" << e;
	b3 = b1 - b2;	b4 = b1 + b2;	d = abs(b4 - b3); e = (b3 + b4) / 2;
	cout << "\n" << b3 << "\t\t" << b4 << "\t\t" << d << "\t\t" << e;
	c3 = c1 - c2;	c4 = c2 + c1;	d = abs(c4 - c3); e = (c3 + c4) / 2;
	cout << "\n" << c3 << "\t\t" << c4 << "\t\t" << d << "\t\t" << e;
	a1 = log10(7.3445);	a2 = log10(7.3455);	d = abs(a2 - a1); e = (a2 + a1) / 2;
	cout << "\n" << a1 << "\t\t" << a2 << "\t\t" << d << "\t\t" << e;
	b1 = b3 * 4;	b2 = b4 * 4;	d = abs(b2 - b1); e = (b1 + b2) / 2;
	cout << "\n" << b1 << "\t\t" << b2 << "\t\t" << d << "\t\t" << e;
	a1 = a1 + b1; a2 = a2 + b2; d = abs(a2 - a1); e = (a2 + a1) / 2;
	cout << "\n" << a1 << "\t\t" << a2 << "\t\t" << d << "\t\t" << e;
	b1 = a3 * b3; b2 = a3 * b4; d = abs(b2 - b1); e = (b2 + b1) / 2;
	cout << "\n" << b1 << "\t\t" << b2 << "\t\t" << d << "\t\t" << e;
	c1 = b1 - c3; c2 = b2 - c4; d = abs(c2 - c1); e = (c2 + c1) / 2;
	cout << "\n" << c1 << "\t\t" << c2 << "\t\t" << d << "\t\t" << e;
	a1 = a1 / c1; a2 = a2 / c2; d = abs(a2 - a1); e = (a2 + a1) / 2;
	cout << "\n" << a1 << "\t\t" << a2 << "\t\t" << d << "\t\t\n" << e;
	system("pause");
}