Function average10

Exercises/NoModules/Chapter 09/Soln9_05.cpp:15–21

Function to compute an average

// Function to compute an average
double average10(std::span<const double, 10> data)
{
  double sum{};               // Accumulate total in here
  for (double val : data)
    sum += val;               // Sum array elements
  return sum / data.size();   // Return average
}