Перегрузка операций

#include <iostream>
 
class Fraction {
    private:
        int numerator;
        int denominator;
    public:
        Fraction(int numerator, int denominator) : numerator(numerator), denominator(denominator) {}
 
        int getNumerator() const {
            return numerator;
        }
        int getDenominator() const {
            return denominator;
        }
 
        void reverse() {
            int tmp = numerator;
 
            numerator = denominator;
            denominator = tmp;
        }
 
        Fraction getReversed() {
            return Fraction(denominator, numerator);
        }
 
        Fraction operator+(const Fraction other) {
            if ( denominator == other.denominator ) {
                return Fraction(numerator+other.numerator, denominator);
            }
            int num = numerator * other.denominator + other.numerator * denominator;
            int denom = denominator * other.denominator;
            return Fraction(num, denom);
        }
 
        Fraction operator-(const Fraction other) {
            if ( denominator == other.denominator ) {
                return Fraction(numerator-other.numerator, denominator);
            }
            int num = numerator * other.denominator - other.numerator * denominator;
            int denom = denominator * other.denominator;
            return Fraction(num, denom);
        }
 
        Fraction operator*(const Fraction other) {
            return Fraction(numerator * other.numerator, denominator * other.denominator);
        }
 
        Fraction operator/(const Fraction other) {
            return Fraction(numerator * other.denominator, denominator * other.numerator);
        }
 
};
 
std::ostream& operator<<(std::ostream& out, const Fraction& fraction) {
    out << fraction.getNumerator() << "/" << fraction.getDenominator();
    return out;
}
 
int main() {
    Fraction a(2, 7);
    Fraction b(3, 7);
    Fraction c(2, 9);
    Fraction d(1, 2);
    Fraction e(5, 6);
 
    std::cout << "a: " << a << std::endl;
    std::cout << "b: " << b << std::endl;
    std::cout << "c: " << c << std::endl;
 
    std::cout << a << " + " << b << " = " << a+b << std::endl;
    std::cout << a << " + " << c << " = " << a+c << std::endl;
 
    std::cout << b << " - " << a << " = " << b-a << std::endl;
    std::cout << e << " - " << d << " = " << e-d << std::endl;
 
    std::cout << a << " * " << c << " = " << a*c << std::endl;
 
    std::cout << a << " / " << b << " = " << a/b << std::endl;
    std::cout << c << " / " << a << " = " << c/a << std::endl;    
 
    std::cout << "reversed a: " << a.getReversed() << std::endl;
    b.reverse();
    std::cout << "reversed b: " << b << std::endl;
    
    return 0;
}