// Ex5_13.cpp
// Returning a reference
#include <iostream>
#include <iomanip>
using std::cout;
using std::endl;
using std::setw;
        
double& lowest(double values[], int length);   // Function prototype
        
int main()
{

  double data[]  { 3.0, 10.0, 1.5, 15.0, 2.7, 23.0,
                   4.5, 12.0, 6.8, 13.5, 2.1, 14.0 };
  int len { _countof(data) };                         // Number of elements       
  for(auto value : data)
    cout << setw(6) << value;
        
  lowest(data, len) = 6.9;                            // Change lowest to 6.9
  lowest(data, len) = 7.9;                            // Change lowest to 7.9
        
  cout << endl;
  for(auto value : data)
    cout << setw(6) << value;
        
  cout << endl;
  return 0;
}
        
// Function returning a reference
double& lowest(double a[], int len)
{
  int j {};                                           // Index of lowest element
  for (int i {1}; i < len; i++)
    if(a[j] > a[i])                                   // Test for a lower value...
       j = i;                                         // ...if so update j
  return a[j];                                        // Return reference to lowest element
}