// FILE: SumScore.cpp
// ACCUMULATES THE SUM OF EXAM SCORES

#include <iostream.h>

int main ()
{
   // Local data ...
   const int sentinel = -1;	// sentinel value
   int count;			// count of scores processed
   int score;			// each exam score
   int sum;				// sum of scores
   double average;		// average of scores processed

   count = 0;
   sum = 0;
   cout << "Enter scores one at a time as requested." << endl;
   cout << "When done, enter " << sentinel << " to stop." << endl;
   cout << "Enter the first score: ";
   cin >> score;
   while (score != sentinel)
   {
      count++;
      sum += score;
      cout << "Enter the next score : ";
      cin >> score;
   }  // end while

   cout << endl << endl;
   cout << "Sum of exam scores is " << sum << endl;
   cout << count << " exam scores were processed." << endl;
   cout.setf (ios::fixed);
   cout.precision (1);
   average = double (sum) / double (count);
   cout << "Average of the exam scores is " << average << endl;

   return 0;
}