HW 16 09.12.2017

#include <iostream>
#include <cmath>
using namespace std;
const double e = 0.000001;

double function(double x)
{

    return 2 + 2 * x; // исходное уравнение f(x)=0;
}

double d(double a, double b, double c)
{
    while (b - a > e)
    {
        c = (a + b) / 2;
        if (function(b) * function(c) < 0)
            a = c;
        else
            b = c;
    }
    return ((a + b) / 2);
}
    int main()
    {
        double a, b, c;
        cin >> a >> b;
        cout << d(a, b, e);


    system("pause");
    return 0;
}