// Ex5_05.cpp
  // Handling an array in a function as a pointer
  include <iostream>
  using std::cout;
  using std::endl;
  
  double average(double* array, int count);      //Function prototype
  
  int main(void)
  {
     double values[] = { 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0 };
  
     cout << endl
          << "Average = "
          << average(values, (sizeof values)/(sizeof values[0]));
  
     cout << endl;
     return 0;
  }
  
  // Function to compute an average
  double average(double* array, int count)
  {
     double sum = 0.0;                   // Accumulate total in here
     for(int i = 0; i < count; i++)
        sum += *array++;                 // Sum array elements
  
     return sum/count;                   // Return average
  }