#include <iostream>
#include <cmath>

using namespace std;

int main()
{
    double x;
    cout << "Imput x from -1 to 1 \n";
    cin >> x;

    if (x <= -1 || x > 1) {
        cout << "Wrong number ";
        return 0;
    }

    int MaxIter = 1000;
    double eps = 1e-4;
    bool flag = true;

    double a = x;
    double s = a;
    for (int i = 1; fabs(a) > eps; i++) {
        a *= -x;
        s += a / (i + 1);
        if (i > MaxIter) {
            flag = false;
            break;
        }
    }
    if (flag) {
        cout << "s=" << s << "\tln(" << x << "+1)=" << log(x+1);
    } else {
        cout << "Series diverges";
    }
}