Trouble with private portion of Classes

Ok, so I'm working with classes and its been a little while. I basically have to add a new private definition to a program I have already written and change the rest of the program to fit the new definition.

Here is the whole assignment for reference:http://cs.angelo.edu/~mmotl/2305/labs/lab02.pdf

Here is the private portion and the only thing I must add:

Code:

`private:`

long r[2] //r[0] represents numerator

//r[1] represents denominator

Everything else in the assignment is done correctly because i got 100% on it when I turned it in. I just need help on implementing the long r[2] in.

And here is what I have as of now:

Code:

`#include <iostream>`

#include <lab02.h>

using namespace std;

Rational::Rational()

{

SetNumerator(0);

SetDenominator(1);

}

Rational::Rational(long num, long denom)

{

SetNumerator(num);

SetDenominator(denom);

}

void Rational::SetNumerator(long num)

{

r[0]=num;

}

void Rational::SetDenominator(long denom)

{

if(denom==0)

r[1]=1;

else

r[1]=denom;

}

long Rational::GetNumerator() const

{

return r[0];

}

long Rational::GetDenominator() const

{

return r[1];

}

void Rational::Reduce()

{

if(GetDenominator()<0)

{

SetNumerator(-r[0]);

SetDenominator(-r[1]);

}

int gcd=GCD(GetNumerator(), GetDenominator());

SetNumerator(GetNumerator()/gcd);

SetDenominator(GetDenominator()/gcd);

}

long Rational::r[2] //????

{ // <-error on this line (invalid function declaration)

numerator=r[0]; //????

denominator=r[1]; //????

}

long Rational::GCD(long m, long n) const

{

int rem;

if(m==0 && n==0)

return 0;

else if(m==0)

return labs(n);

else if(n==0)

return labs(m);

else

{

m=labs(m);

n=labs(n);

rem=m%n;

if(rem==0)

return n;

else

{

while(rem!=0)

{

m=n;

n=rem;

rem=m%n;

if(rem==0)

return n;

}

}

}

return 1;

}

This was a program that I had already written and you can see that I changed all the instances that used to say numerator to r[0] and all the instances of denominator to r[1]. I don't know where I'm going wrong and why I'm getting that error. There are no tutors here right now either so any help would be appreciated.