/*-----
  Contract: main: void -> int

  Purpose: testing program for the function sum_plus_avg
  
  Examples: when this program is run, the following should
            be printed to the screen:
testing sum_plus_avg: true's should mean passed:
------------------------------------------------
(lengths_sum == 137.6): true
(abs(lengths_avg - 22.9333) < .001): true

(lengths_sum == 0.0): true
(lengths_avg == 0.0): true

  by: Sharon Tuttle
  last modified: 04-27-10
-----*/

#include <iostream>
#include <cmath>
#include "sum_plus_avg.h"
using namespace std;

int main()
{
    const int NUM_LENGTHS = 6;
    double lengths[NUM_LENGTHS] = {2, 7.5, 10, 18, 0.1, 100};
    double lengths_sum;
    double lengths_avg;

    sum_plus_avg(lengths, NUM_LENGTHS, lengths_sum, lengths_avg);

    cout << boolalpha;
    cout << endl;
    cout << "testing sum_plus_avg: true's should mean passed: " << endl;
    cout << "---------------------------------------" << endl;
    cout << "(lengths_sum == 137.6): " << (lengths_sum == 137.6) << endl;
    cout << "(abs(lengths_avg - 22.9333) < .001): " 
         << (abs(lengths_avg - 22.9333) < .001) << endl;
    cout << endl;

    // Example for boundary case:

    sum_plus_avg(lengths, 0, lengths_sum, lengths_avg);

    cout << "(lengths_sum == 0.0): " << (lengths_sum == 0.0) << endl;
    cout << "(lengths_avg == 0.0): " << (lengths_avg == 0.0) << endl;
    cout << endl;


    return EXIT_SUCCESS;
}