#include "stdafx.h"
#include <iostream>
#include <locale>
#include <cmath>
#include <iomanip>
using namespace std;

double function1(double x) {
    return (x - 2)*(x - 2) - 3;
}

double function2(double x, double s) {
    return cos(x)*cos(x) - pow(x, 1 / s);
}

void dichotomy(double a, double b, double (*function1)(double)) {
    int iterations = 0;
    cout << setw(10) << "x" << setw(15) << "F(x)" << setw(13) << "iterations " << endl;
    cout << "______________________________________________________" << endl;
    double x = (a + b) / 2;
    while (abs(function1(x))>0.000001) {

        iterations++;
        if (function1(x) < 0) {
            b = x;
        }
        else  a = x;
        x = (a + b) / 2;
    }
    cout << setw(10) << x << setw(15) << function1(x) << setw(13) << iterations << endl;
    cout << "______________________________________________________ \n" << endl;

}

void dichotomy2(double a0, double b0, double(*function2)(double,double)) {
    double s0 = 1.95, sn = 2, ds = 0.01;
    for (double s = s0; s <= sn; s += ds) {
        double a = a0, b = b0;
        int iterations = 0;
        double x = (a + b) / 2;
        while (abs(function2(x, s))>0.000001) {
            iterations++;
            if (function2(x, s) < 0) {
                b = x;
            }
            else  a = x;
            x = (a + b) / 2;
        }
        cout << setw(10) << "s" << setw(15) << "x" << setw(15) << "F(x)" << setw(13) << "iterations " << endl;
        cout << setw(10) << s << setw(15) << x << setw(15) << function2(x, s) << setw(13) << iterations << endl;
    }
    cout << "______________________________________________________" << endl;
}



int main()
{
    dichotomy(-2.0, 1.0, function1);
    dichotomy2(0.0, 1.0, function2);
    system("pause");
    return 0;
}