Hey, I'm working with a buddy on making this Linear and quadratic regression program and we hit a bug that we both can't seem to figure out. I'm looking for any help I can get, it is greatly appreciated.

Code:

// Gary Marosy
// CMPSC 201C- 001
// HW5
// Inputs: Points Red from File
// Outputs: Equation of the fitted line
#include <iostream>
#include <cmath>
#include <iomanip>
#include <fstream>
using namespace std;
const int SIZE = 20;
void getData (double x[], double y[], int& size)
{
ifstream input;
input.open("linear.txt");
size = 0;
while (!input.eof())
{
input >> x[size] >> y[size];
size++;
}
input.close();
}
void displayResults ( double x[], double y[], double z[], int size)
{
int i = 0;
while (i < SIZE)
{
cout << "Measured X" << fixed << 5 << "Measured Y" << fixed << 5 << right << endl;
cout << x[i] << left << y[i] << right << endl;
i++;
}
}
void linearRegress ( double x[], double y[], int size, double &m, double &b )
{
int i = 0;
while (i < size)
{
int m;
int b;
int sumX = 0;
int sumY = 0;
int sumXY = 0;
int sumX2 = 0;
int denom;
for ( i; i < size; i++)
{
sumX += x[i];
sumY += y[i];
sumXY += x[i] + y[i];
sumX2 += x[i] * x[i];
denom = (size * sumX2) - (sumX * sumX);
m = ((size * sumXY) - (sumX * sumY)) / denom;
b = ((sumX2 * sumY) - (sumXY * sumX)) / denom;
}
}
}
void quadRegress ( double x[], double y[], int size, double &m, double &b, double &c );
int main ()
{
double x[SIZE];
double y[SIZE];
double z[SIZE];
int numlines = 0;
double m = 0;
double b = 0;
double size = 0;
getData(x, y, size);
linearRegress (x, y, size, m, b);
displayResults (x, y, z, size);
return 0;
}

Ah... almost forgot to list the error.... The error reads as..

1>c:\homeworkfiles.cpp\homework5\homework5.cpp(88 ) : error C2664: 'getData' : cannot convert parameter 3 from 'double' to 'int &'

I've never seen an error like this before.

Thanks again to anyone who can help.