#include <iostream>
using namespace std;

void computeMaxAndMin(double data[], int size, double & max, double & min);
void computeAverage(double data[], int size, double & average);

void computeMaxAndMin(double data[], int size, double & max, double & min)
{
     int index;

     max = data[0];
     min = data[0];
     for (index = 1; index < size; index = index + 1)
     {
          if (data[index] > max) max = data[index];
          else if (data[index] < min) min = data[index];
     }
}
void computeAverage(double data[], int size, double & average)
{
     int index;
     double sum;

     for (index = 0; index < size; index = index + 1)
     {
          sum = sum + data[index];
     }
     average = sum / size;
}

int main(int argc, char* argv[])
{
     const int NUMBER_OF_TESTS = 5;
     
     double testGrades[NUMBER_OF_TESTS];
     int index;
     double testMaxScore, testMinScore;
     double testAverageScore;

     cout << "Test Grade Analysis Program" << endl;
     cout << "Please enter the " << NUMBER_OF_TESTS << " grades, separated by spaces: ";

     for (index = 0; index < NUMBER_OF_TESTS; index = index+1)
     {
          cin >> testGrades[index];
     }

     computeMaxAndMin(testGrades, NUMBER_OF_TESTS, testMaxScore, testMinScore);
     cout  << "Max grade was " << testMaxScore << " and min grade was " << testMinScore << endl;
     computeAverage(testGrades, NUMBER_OF_TESTS, testAverageScore);
     cout << "Average was: " << testAverageScore << endl;
}