Lab_1/15var (IV semester) OS&SP

#include "stdafx.h"
#include <stdio.h>
#include <time.h>
#include <windows.h>
#include <iomanip>
#include <iostream>
#include <string>
using namespace std;

void main()
{
    float a = 0, b = 0, step = 0, x = 0;
    cout << "Enter A: "; cin >> a;
    cout << "Enter B: "; cin >> b;
    step = (b - a) / 10000;
    cout << left << setw(4) << "Step" << " | " << setw(10) << "x" << " | " << setw(10) << "sqrt(1-x)" << " | " << setw(10) << "Taylor" << endl;

    clock_t start = clock();
    int count = 1;
    for (float stepX = a; stepX < b; stepX += step, count++) {
        x = stepX;
        float summ = 1;
        summ -= x / 2;
        for (int i = 1; i < 25; i++) {
            float numerator = 1, denominator = 1;
            string strnumerator = "1*";
            string strdenominator = "";
            int tmp = 1;
            for (int j = 0; j < i; j++) {
                if (j < i - 1)
                    strnumerator += to_string(tmp) + "*";
                else
                    strnumerator += to_string(tmp);
                numerator *= tmp;
                tmp += 2;
            }
            tmp = 0;
            for (int j = 0; j <= i; j++) {
                tmp += 2;
                if (j < i)
                    strdenominator += to_string(tmp) + "*";
                else
                    strdenominator += to_string(tmp);
                denominator *= tmp;
            }
            summ -= (numerator / denominator)*pow(x, (i + 1));
        }
        float sqr = sqrt(1 - x);
        cout << left << setw(4) << count << " | " << setw(10) << x << " | " << setw(10) << sqr << " | " << setw(10) << summ << endl;
    }
    clock_t end = clock();
    double seconds = (double)(end - start) / CLOCKS_PER_SEC;
    cout << "Execution time: " << seconds << " seconds" << endl;
    system("pause");
}