// Contract: main: void -> int
// Purpose: interactively ask user for Fahrenheit temperatures
//          to convert to until user indicates he/she is done;
//          for each Fahrenheit temperature entered, print its
//          Celsius equivalent to the screen in a descriptive
//          message
//
// Examples: not applicable (too interactive)
//
// by: Sharon M. Tuttle
// last modified: 11-8-05

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

int main()
{
    char answer;
    double next_fahr_temp;

    cout << "Do you want to enter a Fahrenheit temperature? " 
         << endl;
    cout << "   (type y for yes, anything else for no)" << endl;
    cin >> answer;

    while (answer == 'y')
    {
        cout << "Enter Fahrenheit temperature: ";
        cin >> next_fahr_temp;

        cout << "...is " << fahr_to_cels(next_fahr_temp)
	     << " in Celsius." << endl;

        cout << endl
	     << "Do you want to enter another Fahrenheit "
	     << "temperature? " << endl 
	     << "   (type y for yes, anything else for no)" 
	     << endl;
        cin >> answer;
    }

    return EXIT_SUCCESS;
}