#include <iostream>
using namespace std;
// Class Phan so
class Fraction {
//default private(*)
    int numerator, denominator;
public: //* Definition inside Class
    Fraction() {
        numerator = 1;
        denominator = 1;
    }
    Fraction(int n, int d) {
        numerator = n;
        if (d==0)
        {
            cout << "ERROR" << endl;
        }
        else
            denominator = d;
    }

    void show() // Display method
    {
        if (denominator == 1) // e.g. fraction 2/1 will display simply as 2
            cout << numerator << endl;
        else
            cout << numerator << "/" << denominator << endl;
    }
};

int main()
{
    Fraction a(1,2);
    Fraction b(1,4);
    Fraction c;

    a.show();
    // Result: 1/2

    b.show();
    // Result: 1/4

    c.show();
    // Result: 1

    return 0;
}