//DISPLAY 4.11 Local Variables
//Computes the average yield on an experimental pea growing patch.
#include <iostream>
using namespace std;

double est_total(int min_peas, int max_peas, int pod_count);
//Returns an estimate of the total number of peas harvested.
//The formal parameter pod_count is the number of pods.
//The formal parameters min_peas and max_peas are the minimum
//and maximum number of peas in a pod.

int main( )
{
    int max_count, min_count, pod_count;
    //uncomment this to demo variable scope 
    // average_pea = 0.0;

    double average_pea, yield;

    cout << "Enter minimum and maximum number of peas in a pod: ";
    cin >> min_count >> max_count;
    cout << "Enter the number of pods: ";
    cin >> pod_count;
    cout << "Enter the weight of an average pea (in ounces): ";
    cin >> average_pea;

    cout <<"Before calling est_total: average_pea=" << average_pea<<endl;
    yield =
          est_total(min_count, max_count, pod_count) * average_pea;

    cout <<"After calling est_total: average_pea=" << average_pea<<endl;
    //uncomment this to
    // cout <<"result=" << result <<endl;

    cout.setf(ios::fixed);
    cout.setf(ios::showpoint);
    cout.precision(3);
    cout << "Min number of peas per pod = " << min_count << endl
         << "Max number of peas per pod = " << max_count << endl
         << "Pod count = " << pod_count << endl
         << "Average pea weight = "
         << average_pea << " ounces" << endl
         << "Estimated average yield = " << yield << " ounces"
         << endl;

    return 0;
}

double est_total(int min_peas, int max_peas, int pod_count)
{
    double average_pea;
    double result; 

    average_pea = (max_peas + min_peas)/2.0;
    result = pod_count * average_pea;
    cout <<"Inside est_total(): before returning: average_pea=" << average_pea<<endl;
    return result; 
}