Returning a reference

[code]
// Ex4_10.cpp
// Returning a reference
#include <iostream>
#include <iomanip>
using namespace std;

double& lowest(double A[], int len);    // Prototype of function
                                        // returning a reference

int main(void)
{
    double array[] = {3.0, 10.0, 1.5, 15.0, 2.7, 23.0,4.5, 12.0, 6.8, 13.5, 2.1, 14.0 };

    // Initialize to number of elements
    int len = sizeof array/sizeof array[0];
    cout << endl;
    
    for(int i = 0; i<len; i++)
        cout << setw(6) << array[i];

    lowest(array, len) = 6.9;     // Change lowest to 6.9
    lowest(array, len) = 7.9;     // Change lowest to 7.9
    
    cout << endl;
    
    for(i = 0; i<len; i++)
        cout << setw(6) << array[i];
    cout << endl;

    return 0;
}

double& lowest(double A[], int len)
{
    int j=0;                // 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
}

[/code]