#include <iostream>
#include <cmath>
#include <iomanip>

using namespace std;

int main()
{
    setlocale(LC_ALL,"");
    double x, p=1, n=1, sum=0, f, eps;
    do
    {
        cout << "Введите x (0 < |x| < 1) : ";
        cin >> x;
    } while (abs(x) > 1);
    cout << "Введите точность (eps) : ";
    cin >> eps;
    f = 1 - (1 / pow(1+x,0.25));
    while (abs(p) > eps)
    {
        p *= pow(-1,n+1)*((4*n-3)/(4*n))*x;
        sum += p;
        n++;
        cout << p << endl;
    }
    cout << "Сумма ряда : " << setprecision(6) << sum;
    cout << "\nПроверка : " << setprecision(6) << f;
}