Sum of Series||C++ language||programming_info ||Series problem 14

To calculate sum of the first N terms of the series:

2/3-4/5+6/7-8/9+.....

Solution using C++ language:

#include <iostream>

using namespace std;

int main() {

   int n = 17,i = 1;

   double res = 0.0;

   bool sign = true;

   while (n > 0) {

      n--;

      if (sign) {

         sign = !sign;

         res = res + (double)++i / ++i;

      } else {

         sign = !sign;

         res = res - (double)++i / ++i;

      }

   }

   cout << "The sum of the given series is "<< res;

   return 0;

}

Output:

The sum of given series is 0.77152

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