bool operator>(Rational& r1, Rational& r2){ r1.normalize(); r2.normalize(); if(r1.getN() > r2.getN()){ return true; } return false; }
bool operator==(Rational& r1, Rational& r2){ if( r1.getN() == r2.getN() && r1.getD() == r2.getD() ){ return true; } return false; }