// rationaltest.cpp -- test program for rational arithmetic package.
// cse143 assignment 1 sample solution, Jan. 1999.  HP

#include <iostream.h>
#include "rational.h"

void main(void){
	
	Rational r1, r2;
	int a,b,c,d;
	
	cout << "Enter fractions a/b and c/d as four integers a b c d.\n";
	cout << "Enter four zeros to stop:" << endl;
	cout << "? ";
	
	cin>> a >> b >> c >> d;
	while (a!=0 || b!=0 || c!=0 || d!=0) {
		r1 = Rational(a,b);
		r2 = Rational(c,d);
		
		cout << endl;
		
		cout << "Numerator of   " << r1 << " == " <<   num(r1) << endl;
		cout << "Denominator of " << r1 << " == " << denom(r1) << endl;
		
		cout << '-' << r1 << " == " << -r1 << endl;
		cout << r1 << " + " <<  r2 << " == " << r1+r2 << endl;
		cout << r1 << " - " <<  r2 << " == " << r1-r2 << endl;
		cout << r1 << " * " <<  r2 << " == " << r1*r2 << endl;
		cout << r1 << " / " <<  r2 << " == " << r1/r2 << endl;
		
		cout << r1 << " >  " <<  r2 << " == " << (r1> r2) << endl;
		cout << r1 << " >= " <<  r2 << " == " << (r1>=r2) << endl;
		cout << r1 << " == " <<  r2 << " == " << (r1==r2) << endl;
		cout << r1 << " != " <<  r2 << " == " << (r1!=r2) << endl;
		cout << r1 << " <= " <<  r2 << " == " << (r1<=r2) << endl;
		cout << r1 << " <  " <<  r2 << " == " << (r1< r2) << endl;
		
		
		cout << "\n? ";
		cin >> a >> b >> c >> d;
	}
	cout << "\nbye." << endl;
}