S1 - zad.10

#include <iostream>

int main()
{
   int n;
   float x;
   std:: cout << "Unesite x: ";
   std:: cin >> x;
   std:: cout << "Unesite n: ";
   std:: cin >> n;

   float s1=0, s2=0;
   for (int i=1; i<=n; i++)
   {
       if(i%2==0)
       {
           s1+=1/(x*(x+i));
       }
       else
        s2+=1/(x*(x+i));
   }

   std:: cout << "Suma je: " << s1-s2;
   return 0;
}