Bisection_Yana

#include<iostream>

using namespace std;

double func(double x)
{
    return (-x*x + 6 * x + 5);
}


double c;

void bisection(double a, double b,double e)
{
    c = a; int i = 0;
    while (abs(b - a) >= e)
    {
        cout << "Iteration #" << i << endl;
        c = (a + b) / 2;
        if (func(c) > func(a)) {
            cout << "Midpoint = " << c << endl;
            cout << "f(" << c << ")=" << func(c) << endl;
            a = c;
        }
        else {
            cout << "Midpoint = " << c << endl;
            cout << "f(" << c << ")=" << func(c) << endl;
            b = c;
        }
        i++;
    }
}

int main()
{
    double a, b, e;
    a = 0;
    b = 5;
    cout << "a = " << a << endl;
    cout << "b = " << b << endl;
    cout << "Enter e:";
    cin >> e;
    bisection(a, b,e);
    cout << "\n";
    cout << "Point of maximum is = " << c << endl;
    cout << "Extr is = " << func(c) << endl;

    return 0;
}