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#include<iostream>
#include<conio.h>
using namespace std;
class rational
{
int n,d;
public:
rational() : n(1), d(1) {};
~rational(){};
void getData()
{
cout<<"\nEnter a numerator: ";
cin>>n;
cout<<"Enter a denominator: ";
cin>>d;
cout<<endl;
while(d==0)
{
cout<<"Please enter a denominator: ";
cin>>d;
}
while(d<0)
{
n *= 1;
d *= 1;
}
}
int GCD(int n1, int remainder)
{
if(remainder==0)
return(n1);
else { return(GCD(remainder,n1%remainder)); }
}
void reduce(int &n,int &d)
{
int rdc = 0;
if(d>n)
rdc = GCD(d,n);
else if(d<n)
rdc = GCD(n,d);
else
rdc = GCD(n,d);
n /= rdc;
d /= rdc;
cout<<"\nAfter operating the rational numbers are: "<<n<<"/"<<d<<endl;
}
void operator +(rational c1)
{
rational temp;
temp.n=(n*c1.d)+(c1.n*d);
temp.d=c1.d*d;
reduce(temp.n,temp.d);
}
void operator (rational c1)
{
rational temp;
temp.n=(n*c1.d)(c1.n*c1.d);
temp.d=c1.d*d;
reduce(temp.n,temp.d);
}
void operator *(rational c1)
{
rational temp;
temp.n=n*c1.n;
temp.d=d*c1.d;
reduce(temp.n,temp.d);
}
void operator /(rational c1)
{
rational temp;
temp.n=n*c1.d;
temp.d=d*c1.n;
if(temp.d<0)
{
temp.n *= 1;
temp.d *= 1;
}
reduce(temp.n,temp.d);
}
};
int main()
{
rational c1, c2;
int n;
cout<<"Enter the data for the first fraction: ";
c1.getData();
cout<<"Enter the data for the second fraction: ";
c2.getData ();
cout<<"1 . Addition of the two fractions"<<endl;
cout<<"2 . Subtraction of the two fractions"<<endl;
cout<<"3 . Multiplication of the two fractions"<<endl;
cout<<"4 . Division of the two fractions"<<endl;
cout<<"\nEnter your choice: ";
cin>>n;
switch(n)
{
case 1:
c1+c2;
getch();
break;
case 2:
c1c2;
getch();
break;
case 3:
c1*c2;
getch();
break;
case 4:
c1/c2;
getch();
break;
default:
cout<<"Invalid choice."<<endl;
return 0;
}
getch();
return 0;
}
 