#include <iostream>
using namespace std;
#include <string>
#include <iostream>
class Simple_fraction{
public:
Simple_fraction(int num, int den)
: numerator(num)
, denominatior(den)
{}
friend std::ostream& operator<< (std::ostream& out, const Simple_fraction& sf_a)
{
out << sf_a.numerator << '/' << sf_a.denominatior;
return out;
}
private:
int numerator;
int denominatior;
};
int main() {
Simple_fraction s(1,2);
std::cout << s << std::endl;
return 0;
}
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