#include <cstdlib>
#include <iostream>
#include <string>
#include <sstream>

using namespace std;

class fraction
{
private:
 long num;
 long den;
 char over;
public:
 void getFrac()
 {
  cout << "Enter a fraction: ";
  cin >> num >> over >> den;
  lowterms();
 }
 fraction addFraction(fraction f2)
 {
  f2.num =(num * f2.den) + (den * f2.num);
  f2.den = (den * f2.den);
  return f2;
 }
 fraction subFraction(fraction f2)
 {
  f2.num =(num * f2.den) - (den * f2.num);
  f2.den = (den * f2.den);
  return f2;
 }
 fraction mulFraction(fraction f2)
 {
  f2.num =(num * f2.num);
  f2.den = (den * f2.den);
  return f2;
 }
 fraction divFraction(fraction f2)
 {
  f2.num =(num * f2.den);
  f2.den = (den * f2.num);
  return f2;
 }
 void fraction::lowterms()
 {
  long tnum, tden, temp, gcd;
  tnum = labs(num);
  tden = labs(den);
  if (tden == 0)
  {
      cout<<"Division by 0 is not allowed";exit(3);
  }
  else if (tnum == 0)
  { num = 0; den = 1; return; }

  while(tnum != 0)
  {
   if (tnum < tden)
   { temp = tnum; tnum = tden; tden = temp; }
   tnum = tnum - tden;
  }
  gcd = tden;
  num = num / gcd;
  den = den / gcd;
 }
 void showFrac() const
 {
  cout << "The result is " << num << "/" << den << endl;
 }
bool equals(fraction f2)
{
    if (num == f2.num && den == f2.den)
    {
        return true;
    }
    else
    {
        return false;
    }
}
string toString()
{
    ostringstream s;
    if(den == 1)
    {
    s << num;
    }
    else
    {
    s << num << over << den;
    }
    return s.str();
}
};
int main()
{
 fraction f1, f2, f3, f4, f5, f6;

 cout << "This will show the sum, difference, product and quotient of two fractions.\n " << endl;
 f1.getFrac();
 f2.getFrac();
 f3 = f1.addFraction(f2);
 f3.lowterms();
 f3.showFrac();
 f4 = f1.subFraction(f2);
 f4.lowterms();
 f4.showFrac();
 f5 = f1.mulFraction(f2);
 f5.lowterms();
 f5.showFrac();
 f6 = f1.divFraction(f2);
 f6.lowterms();
 f6.showFrac();
 if(f1.equals(f2))
 {
     cout<<"Fractions are equal"<<endl;
 }
 else if(!f1.equals(f2))
 {
     cout<<"Fractions are not equal"<<endl;
 }
cout<<"First fraction is "<<f1.toString()<<endl;
cout<<"Second fraction is "<<f2.toString();

 system("pause>0");
 return 0;
}