#include <stdio.h>
#include <math.h>

double my_function(double x, double eps)
{
int n;
double sum, current;
n=1; //степень
sum=0.0; //сумма
current=x*(x-1); //элемент
while (fabs(current/n)>eps)
{sum+= (current/n);
current*=-(x-1);
n++;
}
return sum;}

int main(double arg)
{
arg=1.5;
double eps;
eps=0.0001;
double res = my_function(arg,eps);
res-=1;
double log(double x);
double r=log(arg);
r*=1.5;
r-=1;
printf("\nMy result = %f", res);
printf("\nExact result = %f", r);
char c;
scanf("%c", &c);scanf("%c", &c);
return 0;
}