//	1/2 + 3/4 = ?
//

#include<iostream>
using namespace std;

class Fraction
{	int nume;
	int deno;
	//reduce the factions - p.115
	//void reduce();
public:
	// 0/1
	Fraction() 
	{ 	nume = 0;
		deno = 1;
	}
	Fraction(int n, int d)
	{	nume = n;
		deno = d;
	}
	// funtion members
	void Set(int n, int d) 
	{       nume = 0;
                deno = 1;
        }
	void Print() const
	{	cout << nume << "/" << deno; }
	Fraction Addition(Fraction x)
	{ 	Fraction ans;		//temporary obj
		ans.nume = nume * x.deno + deno * x.nume;
		ans.deno = deno * x.nume;
		//use the reduce
		// ???
		return ans;
 	}
        Fraction Subtraction(Fraction x)
        {       Fraction ans;           //temporary obj
                 ans.nume = nume * x.deno - deno * x.nume;
                 ans.deno = deno * x.nume;
                 return ans;
         }
	 Fraction Multiplication(Fraction x)
         {       Fraction ans;           //temporary obj
                 ans.nume = nume * x.deno;
                 ans.deno = deno * x.nume;
                 return ans;
         }


};

int main()
{
	Fraction a, b, c;	//c = a + b
	Fraction d, e, f;	//	d = a - b; e = a * b
	a.Set (1, 2);
	b.Set (3, 4);
	d.Set (5, 6);
	f.Set (7, 8);
	c = a.Addition(b);
	c.Print();
	f = d.Subtraction(e);
	f.Print();
	e = a.Multiplication(b);
	e.Print();

	
	cout << "Hi .\n\n.";
	return 0;
}