#include<iostream>
using namespace std;

class fraction{
  private:
     int num;  // the numerator
     int den;  // the denominator
  public:
     void set(int, int);
     void print();
     fraction multiply(fraction);
};

int main(){
   fraction f1, f2, f3;
   f1.set(3,5);  // set the value of fraction 1
   f2.set(2,7);  // set the value of fraction 1
   f3 = f1.multiply(f2);  // weird looking
   f1.print();
   cout << " * ";
   f2. print();
   cout << " = ";
   f3.print();
   cout << endl;
}

// Definitions of the class functions 
// class function are also called methods

void fraction::set(int n, int d){
   num = n;
   if(d != 0){  // don't allow a 0 denominator
      den = d;
   } else {
      den = 1;
   }
}

void fraction::print(){
   cout << num << "/" << den;
}

fraction fraction::multiply(fraction f){
   fraction answer;
   int n, d;
   n = num * f.num;  // multiply numerators
   d = den * f.den;  // multiply denominators
   answer.set(n,d);  // set the answer
   return answer;    // return the answer
}