Issues overloading [] operator

[Lang]

Hey guys,

I can't seem to get the declaration for overloading the [] operator correctly.

friend const int& operator[] (unsigned int argInt);

const int& operator[] (unsigned int argInt){
        if (getDegree() > argInt){
		return 0;
	}else{
		for (int i = 0; i < nCoeff; ++i){
			if (degrees[i] == argInt){
				return coeff[i];
			}
		}
	}
}

[edit] I also tried const int& Polynomial:perator[] but it gave me an error saying 'binary '[' : 'Polynomial' does not define this operator or a conversion to a type acceptable to the predefined operator'

First off my syntax for overloading this operator is incorrect but I do not know where.

Also it can't find getDegree() nCoeff, degrees and coeff - these are variables (and one function) that are available in the class but because I have no reference to the object - I don't know how to access the object.

When overloading other operators ++ I have access to the object - is there a way I can access the object in the [] operator?

Thanks in advance,
Lang