C++: Evaluate Binomial Coefficients

double Factorial(double nValue)
{
	double result = nValue;
	double result_next;
	double pc = nValue;
	do
	{
		result_next = result*(pc-1);
		result = result_next;
		pc--;
	}while(pc>2);
	nValue = result;
	return nValue;
}

double EvaluateBinomialCoefficient(double nValue, double nValue2)
{
	double result;
	if(nValue2 == 1)return nValue;
	result = (Factorial(nValue))/(Factorial(nValue2)*Factorial((nValue - nValue2)));
	nValue2 = result;
	return nValue2;
}

int main()
{
	cout<<"The Binomial Coefficient of 5, and 3, is equal to: "<< EvaluateBinomialCoefficient(5,3);
	cin.get();
}

Output: