Thread: Returning values by reference.

I am having some problems with an error I do not understand it looks to me the exact same as in the book. Here is the code and the given error.

Code:

Code:

#include <iostream>

using namespace std;
enum ERR_CODE {SUCCESS, ERROR};
ERR_CODE Factor(int, int&, int&); // Function prototype

int main()
{
    int number, squared, cubed;
    ERR_CODE result;

    cout << "Enter a number (0-20): " ;
    cin >> number;

    result = Factor(number, squared, cubed);

    if(result == SUCCESS)
    {
        cout << "Nunber:\t\t" << number << endl;
        cout << "Squared:\t\t" << squared << endl;
        cout << "Cubed:\t\t" << cubed << endl;
    }
    else
    {
        cout << "Error encountered!!" << endl;
    }

    return 0;
}

ERR_CODE Factor(int n, int rSquared, int rCubed)
{
    if (n > 20)
    {
        return ERROR; // Simple error code
    }
    else
    {
        rSquared = n*n;
        rCubed = n*n*n;
        return SUCCESS;
    }
}

Error:

Line:15 Undefined reference to 'Factor(int, int&, int&)'

Thanks, guess I have been awake for to long.