/**
 * Assignment #2, Program 3
 * Program to calculate housing costs
 * Author: Mark Allen Weiss
 * SSN: 000-00-0000
 * Course: COP-2210 Section 8
 * Date: September 28, 1998
 *
 * CERTIFICATION OF SOLE AUTHORSHIP
 * I certify that this work is solely my own and
 * that none if it is the work of any other person.
 * I further certify that I have not provided any
 * assistance to other students enrolled in COP-2210 that
 * would render their CERTIFICATION OF SOLE AUTHORSHIP
 * invalid. I understand that violations of this pledge
 * may result in severe sanctions.
 *
 *
 *
 * -----------------------------------
 *   (Mark Allen Weiss)       <--- Put your name here, and sign above
 */

#include <iostream.h>
#include "money.h"
#include "apstring.h"


  // Program constants
const int YEARS = 5;

  // Function declarations
void display_instructions( );
double get_input( apstring message, int house_num );
money compute_house_cost( money initial_cost, money annual_fuel_cost,
                                   double tax_rate );
void print_heading( );
void print_cost( money initial_cost, money annual_fuel_cost,
                    double tax_rate, money total_cost );

int main( )
{
      // Inputs
    money initial_cost1, initial_cost2, initial_cost3;
    money annual_fuel_cost1, annual_fuel_cost2, annual_fuel_cost3;
    double tax_rate1, tax_rate2, tax_rate3;

      // Outputs
    money total_cost1, total_cost2, total_cost3;

      // Read values
    display_instructions( );
    initial_cost1     = get_input( "initial house cost", 1 );
    annual_fuel_cost1 = get_input( "annual fuel cost", 1 );
    tax_rate1         = get_input( "tax rate (1% is represented as .01)", 1 );
    initial_cost2     = get_input( "initial house cost", 2 );
    annual_fuel_cost2 = get_input( "annual fuel cost", 2 );
    tax_rate2         = get_input( "tax rate (1% is represented as .01)", 2 );
    initial_cost3     = get_input( "initial house cost", 3 );
    annual_fuel_cost3 = get_input( "annual fuel cost", 3 );
    tax_rate3         = get_input( "tax rate (1% is represented as .01)", 3 );

      // Compute answers
    total_cost1 =
           compute_house_cost( initial_cost1, annual_fuel_cost1, tax_rate1 );
    total_cost2 =
           compute_house_cost( initial_cost2, annual_fuel_cost2, tax_rate2 );
    total_cost3 =
           compute_house_cost( initial_cost3, annual_fuel_cost3, tax_rate3 );

      // Print the answers
    print_heading( );
    print_cost( initial_cost1, annual_fuel_cost1, tax_rate1, total_cost1 );
    print_cost( initial_cost2, annual_fuel_cost2, tax_rate2, total_cost2 );
    print_cost( initial_cost3, annual_fuel_cost3, tax_rate3, total_cost3 );

    return 0;
}

/**
 * Print instructions.
 */
void display_instructions( )
{
    cout << "This program will compute the total house cost for three houses."
         << endl;
    cout << "Each house cost consists of three parameters:" << endl;
    cout << "\t1. An initial house cost" << endl;
    cout << "\t2. Annual fuel cost" << endl;
    cout << "\t3. The tax rate." << endl;
    cout << "The cost is computed over " << YEARS << " years." << endl << endl;
}

/**
 * Print answers.
 */
void print_cost( money initial_cost, money annual_fuel_cost,
                    double tax_rate, money total_cost )
{
    cout << initial_cost << "  \t\t"
         << annual_fuel_cost << "  \t\t"
         << tax_rate << "  \t\t"
         << total_cost << endl;
}

/**
 * Read an input; message is used to give a prompt.
 */
double get_input( apstring message, int house_num )
{
    double value_read;

    cout << "Please enter " << message << " for house " << house_num << ": ";
    cin >> value_read;

    return value_read;
}

/**
 * Compute the total housing cost.
 */
money compute_house_cost( money initial_cost, money annual_fuel_cost,
                           double tax_rate )
{
    return annual_fuel_cost * YEARS + initial_cost
                                    + initial_cost * tax_rate * YEARS;
}

/**
 * Print a heading for the table.
 */
void print_heading( )
{
    cout << "Initial house cost" << "\t"
         << "Annual fuel cost" << "\t"
         << "Tax rate" << "\t"
         << "Total cost" << endl;
}