/******************************************************

** Name: 

** Filename: RationalNumDrv.cpp

** Project #: Deitel & Deitel 8.17 

** Project Description: Create a class RationalNumber
   (fractions) with the following capabilities:
		a)Create a constructor that prevents a 0 
		  denominator in a fraction, reduces or 
		  simplifies fractions that are not in reduced
		  form and avoids negative denominators.
		b)Overload the addition, subtraction,
		  multiplication and division operators for this
		  class.
		c)Overload the relational and quality operators 
		  for this class.

** Output: The result of the first and second fraction 
           using: Addition
		  Subtraction
	          Multiplication
		  Division
                  > or <
		  >= or <=
		  != or ==

** Input: First fraction numerator and denominator
          Second fraction numerator and denominator

** Algorithm: Create class RationalNumber.cpp with operator all
              operator functions.
	      Create header file RationalNumber.h
	      Print out results using RationalNumberDrv.cpp
              Ask user for first fraction 
              Ask user for second fraction
	      Use operator+ produce result
	      Use operator- produce result
	      Use operator* produce result
	      Use operator/ produce result
	      Use operator> and operator< produce result
	      Use operator>= and operator<= produce result
	      Use operator!= and operator== produce result
	      Print result of all operator functions
	      End program

******************************************************/
// Include files
#include <iostream> 
#include <conio.h>
#include "RationalNum.h"
using namespace std;

// Global Type Declarations

// Function Prototypes
void instruct (void);
void pause ();

//Global Variables - should not be used without good reason.


int main()
{
      // Declaration section
   int a, 
       b, 
       c, 
       d;

	  // Executable section
   instruct ();
 
   cout << "Enter first fraction numerator:    ";
   cin >> a; 
   cout << "                                  ---";
   cout << "\nEnter first fraction denominator:  ";
   cin >> b;
   cout << "\nEnter second fraction numerator:   ";
   cin >> c;
   cout << "                                  ---";
   cout << "\nEnter second fraction denominator: ";
   cin >> d;
   cout << "\n";
   
   RationalNumber x( a, b ), y( c, d ), z;

   x.printRational();
   cout << " + " ;
   y.printRational();
   cout << " = ";
   z = x + y;
   z.printRational();

   cout << '\n';
   x.printRational();
   cout << " - " ;
   y.printRational();
   cout << " = ";
   z = x - y;
   z.printRational();

   cout << '\n';
   x.printRational();
   cout << " * " ;
   y.printRational();
   cout << " = ";
   z = x * y;
   z.printRational();

   cout << '\n';
   x.printRational();
   cout << " / " ;
   y.printRational();
   cout << " = ";
   z = x / y;
   z.printRational();

   
   cout << "\n\n";
   x.printRational();
   cout << " is:";

   cout << "\t";
   cout << ( ( x > y ) ? "  > " : "  <= " );
   y.printRational();
   cout << " according to the overloaded > operator\n";
   
   cout << "\t";
   cout << ( ( x < y ) ? "  < " : "  >= " );
   y.printRational();
   cout << " according to the overloaded < operator\n";
   
   cout << "\t";
   cout << ( ( x >= y ) ? "  >= " : "  < " );
   y.printRational();
   cout << " according to the overloaded >= operator\n";
   
   cout << "\t";
   cout << ( ( x <= y ) ? "  <= " : "  > " );
   y.printRational();
   cout << " according to the overloaded <= operator\n";
   
   cout << "\t";
   cout << ( ( x == y ) ? "  == " : "  != " );
   y.printRational();
   cout << " according to the overloaded == operator\n";
   
   cout << "\t";
   cout << ( ( x != y ) ? "  != " : "  == " );
   y.printRational();
   cout << " according to the overloaded != operator" << endl;
   pause();
   return 0;
}

void instruct (void)
{
	  // Declaration section
          cout << "Display the use of class RationalNumber to ";
	  cout << "perform various operator functions.\n";
	  cout << "___________________________________________";
	  cout << "___________________________________\n\n";
	  // Executable section
}

void pause ()
{
    // Declaration section

    // Executable section
    cout << "\nPress any key to continue...";
    getch();
    cout << "\r";
    cout << "                            ";
    cout << "\r";
}


/*
Program Output

Display the use of class RationalNumber to perform various operator functions.
______________________________________________________________________________

Enter first fraction numerator:    2
                                  ---
Enter first fraction denominator:  3

Enter second fraction numerator:   1
                                  ---
Enter second fraction denominator: 2

2/3 + 1/2 = 7/6
2/3 - 1/2 = 1/6
2/3 * 1/2 = 1/3
2/3 / 1/2 = 4/3

2/3 is:   > 1/2 according to the overloaded > operator
          >= 1/2 according to the overloaded < operator
          >= 1/2 according to the overloaded >= operator
          > 1/2 according to the overloaded <= operator
          != 1/2 according to the overloaded == operator
          != 1/2 according to the overloaded != operator

Enter first fraction numerator:    1
                                  ---
Enter first fraction denominator:  5

Enter second fraction numerator:   1
                                  ---
Enter second fraction denominator: 5

1/5 + 1/5 = 2/5
1/5 - 1/5 = 0
1/5 * 1/5 = 1/25
1/5 / 1/5 = 1

1/5 is:   <= 1/5 according to the overloaded > operator
          < 1/5 according to the overloaded < operator
          >= 1/5 according to the overloaded >= operator
          <= 1/5 according to the overloaded <= operator
          == 1/5 according to the overloaded == operator
          == 1/5 according to the overloaded != operator

Press any key to continue...
*/