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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class Rational {
  5.     int p; 
  6.     int q; 
  7. public:  
  8.     Rational (int d=0, int n=1) : p{d}, q{n} { } 
  9.     Rational operator*(const Rational& r) const {    // for curent object * r
  10.     	return Rational(p*r.p,q*r.q); 
  11.     }
  12.     int numerator() const {return p; }
  13.     int denominator() const { return q; } 
  14. }; 
  15. Rational operator+(const Rational &a, const Rational &b) {
  16. 	return Rational(a.numerator()*b.denominator()+b.numerator()*a.denominator(),
  17. 	                                                  a.denominator()*b.denominator());
  18. }
  19. ostream& operator<<(ostream& os, const Rational &r) {
  20. 	return os << " ("<<r.numerator()<<"/"<<r.denominator()<<") ";
  21. }
  22.  
  23.  
  24. int main() {
  25. 	Rational two{2}; 
  26. 	Rational quarter{1,4}; 
  27. 	cout << two<<endl; 
  28. 	cout << quarter<<endl; 
  29. 	cout << quarter*2 <<endl; 
  30. 	cout << quarter*two <<endl; 
  31. 	cout << quarter*two+quarter <<endl; 
  32. 	return 0;
  33. }
Success #stdin #stdout 0s 15232KB
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https://ideone.com/qqmHPP
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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