Creating and implementing functions (C++).

Ouch. I didn't notice that either.
Seems you've got the hang of it, though. Have fun.

Ahh... not quite. I mean, I do, but now getting the variance is becoming a challenge.

Can I call a function within a declared function? I've got this down...

Code:

float Variance(int numValues, float avg, float squaresSum);

float Variance(ifstream &inF, int numValues, float avg, float squaresSum)
{
    //Start from the beginning of the file - Rewind.
    inF.clear();
    inF.seekg(0L, ios::beg);

    //Variance = sumofsquares/#values - average*average (when numValues>0);
    float variance = 0;
    avg = Sum (inF) / InputCount (inF);
    variance = SumOfSquares (inF) / InputCount (inF) - avg * avg;
    return variance;
}

And this is within the main function:

Code:

//Prints the variance of the values in file.
cout << "VARIANCE = " << Variance (inF, numValues, avg, squaresSum) << endl;

The error I get is that numValues, avg and squaresSum are undeclared variables. I tried declaring them within the function but it just gave me the same error and the error lies on the line where I'm trying to print the variance.