// Mr. Minich

// CMPSC 101

// Ch. 10 Demo Program #2
// January 30, 2000 

// Purpose - the use of a sentinel value and summing all elements of an array



#include <iostream>
using namespace std;



int main()

{

	int runningTotal = 0;	// total of all scores so far

	int count = 0;		// position within array

	int gameScores[100];	// it is assumed that the user

				//     will not need to enter more

				//     than 100 game scores



	do 

	{

		count++;		// we are  not going to make use of the

					//     zero position of the array

		cout << "Enter the score of Game " << count << " (-99 to stop): ";

		cin >> gameScores[count];


		if (gameScores[count] != -99)

		{

			runningTotal = runningTotal + gameScores[count];

		}


	} while(gameScores[count] != -99);



	// runningTotal is an accumulator.

	// The user enters the sentinel value of -99 to indicate that he/she

	//    is finished entering game scores.



	cout << "Your average score was " << runningTotal / (count - 1) << endl;



	return 0;

}// end of main