Series Return values

dzimme2 (19)
I am trying to return the values for the terms of an arithmetic series. However, I am having difficulties in establishing the orientation of each "terms'" sign (+ or -). Any ideas? Thanks!

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 for (i = firstTerm; abs (i) <= abs (maxValue); i = i + (d))
    {
        sum = sum + i;
        
        
       
        
        if ((i) >= 0)
        {
             if (i != abs (maxValue))
             {
                   cout << setw(2);
                   if (i < 0)
                   {
                         cout << i << " - ";
                   }
                   else if (i > 0)
                   {
                        cout << i << " + ";
                   }
             }
             else if (i = maxValue)
             {
                   cout << i << " = " << sum;
             }
           
        }
        else if ((i) <= 0)
        {
             if (i != maxValue)
             {
                   cout << setw(2);
                   if (i < 0)
                   {
                         cout << " - " << abs (i);
                   }
                   else if (i > 0)
                   {
                        cout << " + " << abs (i);
                   }
             }
             else if (i = maxValue)
             {
                  cout << " - " << abs (i) << " = " << sum;
             }
           
        }
therockon7throw (284)
Hi

which arithmetic series is it ? and what kind of difficulties "in establishing the orientation" ?

Could you be more specific!
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